Quote:

If your spool or posi unit has a ring gear spacer in it now you can PROBALLY reuse the old one by removing the spacer If not you will need a new series three carrier or spool to match the ring and pinion used



What he said

When I picked up my Dana, it had 5.38s in it, but it had a spacer.
3.73s bolted right in. So check for a spacer before buying parts.