Originally Posted by TugaDude

Maybe you don't realize it, but your bike's rear spacing can be expanded quite easily. In fact, in many instances it doesn't even have to be spread, there is a certain amount of "give" in steel frames. If you want it spread more than 5mm though, it is recommended that you spread the frame's rear triangle and then have the fork ends adjusted so that they are parallel. Don't be afraid of doing it or having it done. It has been done successfully for longer than any of us have been around. If you don't want to do it, take it to a reputable shop that has experience doing it.

You will then open up a lot of options.