Have a few questions - 83 CC 1 ton

[1985-GMC]

Ive never swapped them out so I don't know it should be fairly easy though with help from people on here. Alright if you use the K20 hangers on the C30 frame and you cut and re weld the perches to match you will have about 3.5" on each side between the drums and the top plate that your u bolts bolt to, so that will be plenty of room even if you go to bigger tires. Now the trans cross member on my K20 drops down a little over 2" more than my K30 one because of the difference in the frames, so you will need to probably make one. Ill get some pictures if you need them.