Chevy Bison Semi Truck: A Detailed Model Kit for Truck Fans. If you're a truck enthusiast who enjoys building detailed models, then the 1:32 scale Chevy Bison Semi Truck is for you! With a part count of 70 and a length of 248 mm, this kit is perfect for modelers aged 12 and up who want to improve their modelling skills.. This model is a faithful replica of the Chevy Bison introduced in 1977. The vehicle featured a lightweight aluminium cab, fibreglass bonnet and a choice of diesel engines. Although Chevy retired from the heavy-duty truck business in 1981, the bison remains a symbol of American truck culture.. Features:.