[westofb]

Yes the 3/4's are 56" long while the 1/2's are about 52" long. I don't think the 3/4's are worn, the truck in it's current condition sits with a slight rake and all components look to be in good working order. I guess I should have mentioned this truck is a rust free California truck with 454/ 400 and only 63k actual miles. If the truck was not in such good shape, I would have found a 1/2 truck to build!

Thanks for the heads up on the bolt holes USSkoval, I sure hope you're right, was dreading having to drill additional holes in the frame. Plus was worried about getting my measurements correct!