comments: hey how r u doing i have a 1981 chevy k20 i took out the old chevy 350 small block and put in a 454 chevy big block. im looking to put new bigger and better axels with lockers in the front and back. i was wondering if u could give me a few opptions to what axels and lockers i should put in soo my truck is better in the wood. my truck will be in a lot of mud and rocky areas thanks