Window Regulator & Motor Compatibility

I realize this is probably a shot in the dark... Does anyone know of any other window regulator and/or window motors that are compatible with the X-90?

My friend just picked up an X-90, where the windows won't go up or down (they are electric). Another friend is trying to fix it, and popped off the door panel on the drivers side yesterday. The regulator & motor are not there. The window is currently held up by a bungie cord. Unfortunately with these things being so rare, finding parts is a huge pain.

I've read online that some people claim a Suzuki Esteem and a Toyota Corrola/Camry window motors are compatible, when switched to the other side. As well as the regulator might be compatible with some kind of Mazda one (no detailed info could be found). If anyone has any info on this, or can point me in the right direction, it would be much appreciated.

I got mine through Suzuki a couple years ago. My problem is it sticks and I have to pull up the window and button at the same time.