This truck model is a very nicely detailed model and has many parts for assemblies including individual frame rails & crossmembers, and even has opening doors. The tractor truck could actually be customized quite easily and can be built into all kinds of other special use trucks including a flatbed, cargo bed, dump truck etc. I made mine into a cement mixer by using different longer frame rails and adding extra axles. This is a very old design and tooling, but the molds have been well taken care of and the quality is just as good if not better than allot of newer models and is a very fun kit to build!