I recently bought 2 frames. A 1970 WITH title, frame was sandblasted and painted in primer, appears to be in perfect condition. I got the frame, suspension, lots of odd parts, 2 engines, a whole pallet of stuff for $750. Then I found a 1975 frame, all original paint w/ a few chips and no engine cradle and NO title for $125. That's information for whats it worth as far as pricing. Can't help you on the differences. One thing I would certainly look for is a valid title. Saves a lot of grief and hassles.