Russ
The only thing we have to watch is that a lot of the earlier versions were upgraded to later standards. A classic example is "All American", one of the choices for the current mid-production kit, which according to DML, had spoked road wheels, top mounted return rollers, and T49 tracks, all of which would be corrcet for a mid-production vehicle.
However, photos of "All American" show solid road wheels, T51 tracks and upswept trailing return rollers! The body, however, is still the early/mid version.
Regards
Rob