david, there was a guy around here that had a few older parts bikes around here, il check with him, im not sure how great some of the things are thought.
jmics, i tried the block from our 82(give or take a year or two) IT250 parts bike and it was far too wide, i dont think it will fit, but we have an 1992 YZ250 that i will try, but will it be big like the IT's?
the bike still runs strong(except for this mess up), so my dad wants to get a little more time out of it before he sells it, it is far from being a parts bike.