go to
www.car-part.com and put in your information. i just put the car in as a 98 and one salvage yard had regulators for all 4 doors at $85 a piece. i'm not sure though what year your car is so i just used my year.
also, under part search, i just clicked window motor, but i reckon you could click rear door parts also and maybe find some.
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charlie
black 98 gtp sedan, 222,000 and running great with the new used tranny!
zzp 3" d/p aluminized
dhp 1.0