I'm friendly with a local dealer who has 3 Clausing 63xx lathes that altogether would fit your bill: all are missing something and the variable speed drives have been replaced with step pulleys. I passed on trying to make one good one out of the three. They're in Southern NH at Risons.com.
Caveat Emptor: I *do* have an interest here as the price on the Rockwell lathe I got there is still to be determined, so helping him move these should be to my benefit. Besides, Bob is as nice a guy as any you'll meet.
Dick Hamm Nashua NH