the LS tranny for the 90 is a Y1, S1 cable tranny (stock). since u r going to buy all new tranny stuff u may as well get hyrdo tranny. so get a hydro tranny, then pedal assembly, clutch cylinder, and on and on. if u search u should come up with everything u need.

the LS tranny gives the car a nice pull (i also have a 90 ls) but if u want quick acceleration, get a GSR tranny