As this has an open back quite a few parts will have to be painted before they are fitted, including the gun.
“The SU-76 – Samokhodnaya Ustanovka 76 (“self-propelled carriage”) – was a Soviet self-propelled gun used during and after World War II. The SU-76 was based on a lengthened and widened version of the T-70 light tank chassis. Its simple construction made it the second most produced Soviet armoured vehicle of World War II, after the T-34 tank…. The SU-76M combined three main battlefield roles: light assault gun, mobile anti-tank weapon and mobile gun for indirect fire.” 
I remember looking at the one in the Tank Museum, Bovington. The driver hatch is open and clearly reveals the two engines (one for each track) arranged in parallel on the right hand side. There appeared to be no separation between them and the driver, which must have made things pretty unpleasant!
  
Tamiya 1/35 kit .
6th Gv OShAP *
Ilyushin Il-2 Sturmovik build – Part 1:Introduction
Ilyushin Il-2 Sturmovik build – Part 2:Cockpit assembly, painting and weathering
Ilyushin Il-2 Sturmovik build – Part 3:Painting
Ilyushin Il-2 Sturmovik build – Part 4:Weathering
* I think that this partially translates to “Independent Composite Air Regiment”
- The exhausts were painted\dry-brushed with the Lifecolor rust paints.
- Chipping\scratches were simulated using AMMO “Matt Aluminium” (A.MIG-194), applied with sponge and fine brush.
- Streaks and paint fading on the upper surfaces were achieved by applying small spots of oil paints (Mig Productions 502 Abteilung “Buff” ABT035, “German Grey Highlight” ABT170, “Faded Grey” ABT100 and “Olive Green” ABT050) followed by blending with a flat brush, dampened with enamel thinner. The underside was treated in a similar way, using Mig Productions 502 Abteilung “Blue-Green for German Grey” ABT230, “Snow White” ABT001 and “Faded UN White” ABT165.
- Washing on upper and lower surfaces was achieved with AK Interactive AMMO “Wash for Interior” (AK093).
- Trying for a panel line wash, the upper surface lines were painted with AMMO “PLW Tan Grey” (A.MIG-1610). Five minutes later the excess was removed using cotton buds. A similar treatment was used on the lower surface, using AMMO “PLW Neutral Brown” (A.MIG-1614).
- To bring everything together I sprayed the entire model with a dilute 1:1 mixture of Tamiya Acrylic XF-57 “Buff” and Tamiya Acrylic XF-52 “Flat Earth” in Tamiya X-20A thinner (10% paint mixture in thinner).
- Exhaust stains were simulated by spraying on Tamiya Acrylic XF-1 “Flat Black” in Tamiya X-20A thinner (10% paint mixture in thinner).
- AMMO “Airfield Dust” pigment (A.MIG-3011) was added by brush to the wheels and the root of wing adjacent to the cockpit, followed by fixing by spraying with Tamiya X-20A thinner.
- AK Interactive “Dark Steel” pigment (AK086) was brushed onto the machines guns and ordnance.
- Tamiya “Soot” weathering powder was brushed on those parts of wings where the guns were mounted.
It appears that I neglected to take any pictures of the finished model before painting! I do remember that it built well enough, with no problems. Moving on …
Primer: Tamiya “Fine Surface Primer” (light grey) spray can
Base coat (under side): A mixture of 90% Tamiya acrylics (Tamiya XF-23 “Light Blue”) and 10% Tamiya X-22 Clear in Tamiya lacquer thinner (2:1 paint mixture to thinner) was sprayed on.
Base coat (upper side camouflage colour 1): A mixture of 90% Tamiya acrylics (Tamiya XF-52 “Flat Earth” and Tamiya XF-59 “Desert Yellow” in a 5:1 ratio) and 10% Tamiya X-22 Clear in Tamiya lacquer thinner (2:1 paint mixture to thinner) was sprayed on.
Base coat (upper side camouflage colour 2): A mixture of 90% Tamiya acrylics (Tamiya XF-58 “Olive Green” and Tamiya XF-2 “Flat White” in a 9:1 ratio) and 10% Tamiya X-22 Clear in Tamiya lacquer thinner (2:1 paint mixture to thinner) was sprayed on.
Base coat (upper side camouflage colour 3): A mixture of 90% Tamiya acrylics (Tamiya XF-24 “Dark Grey”) and 10% Tamiya X-22 Clear in Tamiya lacquer thinner (2:1 paint mixture to thinner) was sprayed on.
- Tyres: Tamiya XF-85 “Rubber Black”
- Wheels: Tamiya XF-22 “RLM Grey”
- Undercarriage and wheel wells: Tamiya XF-22 “RLM Grey”
- Bombs and rockets: Tamiya XF-1 “Flat Black”, Vallejo Model Color “Old Gold” 70878
- Propeller: Tamiya XF-1 “Flat Black”, Tamiya XF-7 “Flat Red”, Citadel “Leadbelcher”
- Machine gun: Tamiya XF-22 “RLM Grey”, Tamiya XF-1 “Flat Black”, Vallejo Model Color “Saddle Brown” 70940, AMMO “Matt Aluminium” A.MIG-194, Citadel “Mithril Silver”
- Various other details: Citadel “Leadbelcher”, Vallejo Model Color “Copper” 70999, Vallejo Model Color “Red” 70947, Vallejo Model Color “German Camouflage Bright Green” 70833, Citadel “Mithril Silver”, Vallejo Model Color “Black Grey” 70862.
The paint was protected with a layer of Humbrol Clear gloss varnish, the decals applied and glossed over. The largest decal – the combined star and Russian script – threatened to break apart when placing it. I might have lost half a letter or so on one of the lines, so if it reads weirdly to a Russian speaker – that’s why! Finally, Citadel Purity Seal satin varnish was sprayed on.