I read somewhere about if you put an ITR 4.7 Final Drive in your Y21 B16 you cannot use the corresponding Quaife LSD for that tranny... due to something being smaller in the Y21 and when you put the 4.7 FD in there it's got something bigger haha sorry I saw this like a month ago and cannot find it again... Ive searched for like 2 hours now

well... I want to put a Quaife LSD and a MFactory 4.7... would it work?

 

The ITR FD has a bigger hole in the ring gear (116.8mm) and will only fit with the LSD made for the B18C GSR/ITR. MFactory makes a B16 4.7 with the smaller 109.8mm hole that will fit the B16 LSD or the B18C 4.7 that will fit the B18C (GSR/ITR) LSD. Get the B16 LSD and the B16 4.7 and you will be fine.