3.73 in NA
 

i've been wondering how much of a performance decrease i would suffer by putting a 3.73 in my 1992 NA... been thinking about getting an LSD and there is someone locally who has a 3.73...

A 14% hit.... yup, that sounds about right. I like the 3.91 for N/A's I don't think I'd like a 3.73 unless I was a MUCH more mellow driver. My wife would probably like it though. Your speedo and odometer are going to be off quite a bit... hard to correct for as the R154's speedo drive gears don't work in the W58. You may be able to find a drive gear for that end gear out of a pickup with a W series transmission though.

hmmm... something to think about.. i do drive a little "spirited" on some back country roads sometimes... guess ill try to find a 3.91 then.. thanks for the input:)