Well I've been in this fight with my engine which is my first one, I did a heads/cam/intake/carb swap on an old used short block that just refuses to die. I put some halfway decent heads on, a cam that's WAY WAY to big and choppy (like 10 second car choppy lol 106 LSA) and a big ole Holley 750 DP to top it off. It's been a struggle to get it driveable but I think I'm there finally, time will tell.
Anyway I have had this awesome Moser rear diff cover with bearing supports that's been collecting dust on the shelf because my engine needed all my attention (or maybe it didn't and that's they key) so this morning I decided to open the diff up and clean, check, and install the new cover. It's a 12 bolt with a mini spool and 3.73's, which should last me and be sufficient for anything I decide to do with the truck. It's going to the track someday but it needs suspension and brakes first
Anyway, easy install, took 45 minutes just putting along and it looks really nice. Not a bad 150 bucks IMO