Yes, the obvious thing to do here is find a reasonably complete non-sandcast K0 and swap parts across to inherent the sandcast's engine ID and frame ID. The butchered frame really hurts though - you either have to forge the frame ID across to the non-sandcast or repair the frame on the sandcast which in addition to needing new tubing welded in, is probably bent completely out of whack and likely has an overstressed and possibly cracked backbone. And unless they have some tricks to play at the DMV, they'll have a salvage title . But assuming all this is solvable, the buyer is sinking an extra $2K into a 750 project just to say that it's a sandcast when they're done. That may be the going premium.
- Mark