dana 60 and u-bolt question

[Theslo1]

This is not a b-body, but I trust the information here best. I saved a d200 from the junkyard, I need to swap the old d60 for a replacement I already have. I wanted to do a spring under conversion while I was at it to lower the truck, Its only 2wd. I don't see a way to make the old u-bolts work, but I think I have a set that look heavy duty from another truck. Problem is they don't match the holes in the shock plate perfect, they are a little wider. My question: Is it ok for the u-bolts to be a little larger radius than the axle tube? This will be a dual rear wheel with a big block and maybe a 4 speed if I can find the parts. Would a caltrack type system be a good or bad idea. I'm not worried about traction, four tires should take care of that, axle wrap is my concern.
Thanks for the input
Eric

 

[uwss]

Get the right ones is always the best solution.

 

[Photon440]

I'd just get new U-bolts as a matter of course when doing a swap. They aren't that costly, why fight with old threads?

 

[Cranky]

What is the axle tube diameter? 3" is pretty common. 3/4 ton truck with CT's? Don't think I've ever seen that before so have no idea how it would work but if traction isn't going to be a concern with a dually setup, then why spend the money on them. Spring wrap up can be dealt with in other ways and for much cheaper.