Frame differences 1/2 to 1 ton ?

[gmc684x4]

Are the frames simaler enough to cross change suspension over ?

I found a deal on a 1 ton gmc that runs for a good price

[kwmech]

Depends on what you want to cross over and which way. 1/2 and 3/4 are pretty close. Step up to a 1 ton and things get pretty large and thicker. Then you have the difference between coil and leafs in the 1/2s and 3/4s

[gmc684x4]

C20 has the frame bulge to accept coils not sure if the c30 frame would be the same or have a straighter frame like a 4x4 frame

I know 3/4 can come coil sprung the c20 i had ditched here with a 1/2 was coil sprung the ex co worker who ditched it here never told me he stole the truck 10 years earlier claiming to restore it to the owner
When the fellow who spent lots of money to restore asked me about his truck i gave it to him with the second truck