66 C10 Trailing Arms

[fredhlynch2]

Need some help with trailing arms for 66 C10. Bought the truck with a 77 C10 leaf spring rear end bolted on....needs to go. The frame mount for the trailing arms on my 66 are still there. My question is this.....is there any difference in length of trailing arms between long and short bed trucks? I have access to trailing arms from a 72 C10 long bed....will they fit?

Any help on this is much appreciated!