SiNFuL

Hey guys...I have a 1992 Hatchback...it's SUPPOSED to come w/ roll-up windows but I guess the previous/original owner before me had power windows installed. Driver's side works...passenger doesn't. I looked into fixing it and w/ labor and all its $300 because it's aftermarket. now I can either just buy a rollup passenger window and bolt it on(or just make the window manual)....or I can buy an electric window that comes stock on a higher class model. I want to do option #2, but will it really bolt in? i have a black and red wire coming from the switch center to my door right now...I'm guessin thats my positive/negative and that should just splice into the stock PW one? am I even close? any help would be awesome! thanks!
-Galen