Leaf spring conversion

[blacknwhitedog]

Ive never been happy with the leaf spring setup on my 64 gmc. I want to convert to the trailing arm setup. Other than trailing arms, springs and shock mounts, pan hard bar, plus welding on new spring perches to the axle, what else is different? Upper coil spring buckets mount to the frame? Anyone done this? Also looking at the cpp tubular trailing arm kit, but prefer using factory style arms.