The engine is basically the same as the F1, Pantah, and the Alazzurra. Many parts will fit from the later 750 engines also (Paso, 750 Sport, 750SS, 750 Monster, etc). Main difference being the rear head is reversed on the later engines. I believe your bike came with Bing carbs, a switch to the 36mm Dellortos along with the manifolds from Pantah, F1, or Ally will improve performance. If you would like a different camshaft, the cams will fit from those bikes also. The later 750SS cams will fit also, problem being you will have to use two horizontal cams due to the rear head being reversed. The later 750 cams would be the least expensive.......