I have a U bolt kit to sell if you make the swap. I had a locker from a blazer (late '80's) bought, but found it to be about an 1-1/4" too wide. The backing plates measured the same, but the drums were wider so I sold it.
Just an FYI, I ended up buying a 3.38 with a complete rebuild kit from Patricks. It was under $600.00.
