90-93 came with 5s-fe for some if not all those years. it will fit, mods will have to be made. best would be to see if u can find an all track motor or at least an all track transmission, you might be able to convert to awd, i have since forgotten all the mods needed, definately wiring, diff axles, tranny, mod at least one of the motor mounts i think, have to have custom downpipe and ic piping and intake and usually relocate battery to back or use a small one. there is probably a celica forum that has info on it.