Hi all, I have a very dumb, yet somewhat specific question (hence wasn't able to turn up much via search): My girlfriend has an old 1983 raleigh olympian that's been converted to a single speed and since it doesn't quite fit her, I was thinking of swapping over as many of the parts as I could to a slightly smaller 1987 Schwinn tempo frame (which has the added advantages of being a nicer frame and, hopefully, a good learning experience for me). However, I wanted to make sure I was aware of all the possible compatibility problems before I attempted to embark on such a thing, because this is supposed to be a budget bike and if I need to buy a ton of extra stuff then I probably don't want to do it.
I'm aware the frames are designed for different size wheels and seat posts -- this I have covered already from my spare parts collection. I also have a headset for the Schwinn already. However I have no idea what, if any, problems I'll run into if I try to swap the stem and bottom bracket from the raleigh onto the schwinn. I've consulted the catalogs for their respective years without much luck, and just generally don't know what to expect since I'm very much a beginner at this kind of thing and don't even know what the possible compatibility issues are that I should be aware of. Is there anything else I don't know about that I should know? Is this a futile endeavor from the outset??