I also noticed its a 1990. Are you completely sure?



The 1990, some 91's had very strong piston rods, but 3 bolt rear ends. Crappy. The 92-94's had weaker rods, but a much better 4 bolt rear. Dont plan on going lower than 12's without adding the better part from one of the two.

 

Well I would want it to be fast but it would be my daily driver... so I dont know about all modding it out! But I would be happy with mid 13's out of the car. Yep the owner stated it was a 1990 GSX and it seems about right...