A couple of years ago there was a fellow by the name of Mafeodo ( I think that's how it was spelled) who had a warehouse full of bike parts that he had inherited from his father. He was in the process of selling off the parts and had a MK 1 engine and transmission which according to the one photo I saw, looked complete with carburettors, complete magdyno, etc. I attempted to buy the lot from him but everytime we came to some agreement, he would raise his price. I gave up. Considering the rather limited market for that type of equipment, he may still have it. He was situated in Buenos Aires. At the time, a gentleman and fellow member of the LDMCC living in BA, by the name of Roger Davis, was a big help to me. His frustration level with dealing with Mr. Mafeodo was pretty high by the time negotiations broke off, but he may be able to point you in the right direction.
David Aggett