Ok im not too hot with the search button i know so sorry if this has been asked but i couldnt find it.
Im after the max speeds (at 7000RPM) in each gear on a S14 manual with standard diff. The reason i ask is due to the fact that i am right on the change point between 3rd and 4th while drag racing so im considering a different closer diff to get me into 4th earlier.
Would the S15 diff acheive this as i dont know the ratios or would i be looking at a auto diff?
Cheers