Just respace the rear to 120 mm, buy a $12 axle and a pair of 5 mm spacers, and file the rear (and possibly front) slots by 2 millimeters in the rear (1 millimeter on the front) and you'll be golden. Yes, there are numerous threads about this. Respacing is just brute force -- grab and pull apart, but go carefully because it'll move more easily than you'd expect. As for filing, a flat file (preferably a draw file -- an industrial supply will know what you are looking for -- and it's cheap at about $7) and a chainsaw chain file for the curved parts and you're golden. Filing will take less than 20 minutes. Then everything is standardized.
As Ceya said, you can get a frame to fit your hubs, but then that frame is always limited to a hard-to-find hub size. It will go up in value quite a bit just by modifying the spacing to 120 and then you can use most hubs and wheels.