Thats what I was gonna say next, I saw 350 turbo diff. and was liek WTF does he mean 300ztt diff. Yes Inline was blowing their diff ever 2nd - 3rd run, and actually my friend always looked at the s2k diff, and said I wonder if my 300z diff would fit. Now its a a sure perfected thing. Nice set-up you will be driving a monster in no time!