I just machined some mounting brackets that go from the old 5.7 to the new LSX blocks for my buddies 97 RCSB 4x4. we are installing a 99 5.3 in the truck. You will also need a flexplate spacer. We will probably make one for his as well. I think hughs makes a flex plate spacer if you just want to buy one. let me know if you want some motor mount brackets. when I free up some machine time I can knock a few more out.

 

yea,i'll go talk to a local builder once I come back for spring break...