i have a 91 civic hatch d15...i wanna swap a sc into it....will a zc hook with a 4spd...or do i need to convert to 5spd?.....also a zc is easy bolt out bolt in right?im pretty new to hondas in case u dint notice my first actually

 

A 4 speed uses longer ratios than does the 5 speed which means it'll hook better. Of course you'll go a hell of a lot slower with the shitty ratios. Get a 5 speed and learn how to drive.