Is it possible to convert a fwd 90 model legacy into an awd model, and what all would you need to do the job correctly. I was considering an engine swap on the car, if i purchased a front clip from a legacy would all i need to do the awd swap be the driveshaft, rear axles, the rear end, + the front clip? or is the entire rear suspension different.

I'm pretty sure the rear suspension is different.

it can be done.....I'm planning on doing it this summer. You'll need hubs from awd car, gas tank, drive line, rear sub frame, dif, axles, struts, and probably a few others things.