What did you have in mind for the front locker?
Hubs... Here's one...
http://rustysoffroad.com/mm5/merchant.mvc?Screen=PROD&Product_Code=3800X&Category_Code=AXL
Keep in mind that YJ, TJ, XJ, and ZJ dana 30's are all identical (with the exceptions of mounts, LP, HP, etc.) But nearly any...