AMT Model Kits - 1:25 Chevrolet Bison Conventional Tractor KitAMTss 1 25 scale Chevy Bison kit is a great project for any experienced big rig modeller whos into the Chevy brand. Add it to your collection today! At 12. 75 inches long, the Bison builds big with a load full of authentic features, including 60+ chrome parts, a 34 inch sleeper, Detroit Diesel 8V92T engine, tilting hood, dual chrome exhaust stacks, optional Dragfoiler air deflector, super detailed interior with high back seats, Holland fifth wheel, 10