Trailing Arms for 74 swb
 

I have my 1956 Chev Pick up on a 1974 frame. Lowered etc. 406 sb, very nice but I plan on installing truck trailing arms from 70 truck. I know ece makes a cross member etc. but the 73-87 frame is not flat at the cross member location (it angles down toward the front) Has anyone installed these truck arms on a later frame. Any help would be appreciated. Thanks Tom