right here.
Damn adey, I thought I was the only one, who could be long winded , hahahhaha J/K.
Lets get right to the point. JDM VLSD's for the most part are 5 bolt or star flanges . This is problem is easily taken care of , you use pre 95 J30 axles, in fact this issue is covered in my VLSD faq. Its no different with the JDM diff as it is with the pre 95 J30 diff.
Ok , next up bolting a later model differential S14 VLSD be it JDM or USDM can be done. Simple things to remember. Change your back cover from your stock S13 differential because it is 4 bolt vs 2 bolt of most JDM ones. The other thing is, you need to get the eyelet bushings as well as the bolts and washers that come with the S14 VLSD. Again, these are the same issues you would have to deal with putting in a 300 x VLSD.
As far as the output flanges for USDM S14's go they are 6 bolt just like S13 USDM.
(To add one more detail to this confusion there were JDM VLSD's both S13 and S14 that came with 6 bolt. It all depends on the year.
You have to look at it from an assembly line basis. certain parts were availible at certain times from the forge so thats what was used . If they ran out they grabbed the other ones.)
Ya I know you did not want to hear that adey. But its the facts.
Got a KAA ( damn dead key
)?? then you do need output flanges. Buying VLSD or LSD output flanges from Nissan new is a expensive ordeal . Try $250-270 and back ordered to the moon. You are better off pulling out your stock diff flanges and grinding down the right side one the two will then fit. doubt this? Mattback on FA did it .
Or like adey did say you can pull the output flanges out of a USM VLSD. the choices are yours.
Also for those of you in the market for a KAA remember that you also need to install your ring and pinion. It does not come with one installed.
AKA driver, putting a 3.92 J30 diff in a turbo car can actually be an advantage due to the fact that it keeps you in your gears roughly 4% longer time thereby engaging your boost that much longer.
Yes the J30 3.92 diff is roughly 4% different in gear ratios . Unless your drag racing and you are worried about a 1/4 of a second its no big deal.
there it is guys most if not all of this stuff is indeed covered in one way or another in my faq , but this does clarify a few things adey was wondering about.