[Jersyboyy]

Feather burner got to the spacer thing before I could.

Iv read ALOT about them before I got a 4th gen 3 series rear.
Alot of guys talk trash about them but are all in theory they never actually run them just he said she said type of stuff.
Guys who have used them its like 1 out of 8 ever had a problem and its usually because they wernt set up right.

I would say if you are stuck with the 2:73's and have the 3:73s already...grab the spacer and have it installed by a real pro and just start saving for a real rear because like all 10 bolts it will break one day when your beating on it and that spacer may or may not take away some strength.

Some guys waste 500 bucks on a new diff thinking oh its a Eaton posi and now I can use my 373's....money well wasted itll break too.