Hi GWWirth
My apologies if it’s not yet clear as mud
I’ll try to explain it the best I know but also if you let us know what specifically you are trying to do we can be more precise to your situation
The cab only is common to all truck sizes except coe,
1/2 to 1 ton share cab fenders hood, basically all the sheet metal that looks the same is the same
Box parts are different lengths and some minor differences between the sizes
The bumpers all interchange however the 1 ton bumper is thicker than the 1/2 and 3/4 ton, the chassis is different for all three 1/2 , 3/4 and 1 ton so you can’t swap the bumper mounts, nor major suspension parts.
The 1-1/2 and larger share their larger counterparts sheet metal parts between them but it’s all bigger stuff and the chassis naturally all larger and very few parts are common to the smaller trucks except the engine itself and some nuts and bolts, etc.
-s
