Well most who want true bottom end usually put the N/A rear end on their TTs....The gearing is much different.....and I believe that the SGP 300zxTT has the N/A diff in their Z....but honestly it is much cheaper to just swap rears rather than swap internals...I don't know exactly what may be different internally besides gearing ratios but thats me 2 cents!


take it easy.

 

I thought that the TT 300ZX diff had a pump for the HICAS and the NA didn't, or am I getting confused with something else?

 

your thinking of HICAS....thats not the dif...or were you saying what is the "difference" between the two models as far as all wheel steering and not....

thats a big difference in your question if thats what you were talking about.