If u r looking for an S13, the 91's have the best cams of all. 89-90's are the SOHC, which make less (140) factory HP than the 91-93 (155) DOHC. But i have read on this board that if u plan on all motor, the SOHC is the engine to do it with. Other than that, HUD is very tempermental. I have HUD in my 90 coupe, and it works fine, just the dash lights flicker on and off. Other than that, get one with all the options, it makes the car feel new even when its 12 years old.
