That's exactly what it is. The top end, heads, intake etc. are from a vintage can-am engine, the block is Merlin X aluminum, and the rotating assem. is Crower. Best of old, best of new. Car has a 355 small block with 44 IDF set up in it now. Got tired of constant wrenching and bought another Maserati. If you look closely in the top left corner of rear susp. pik you can see my old Biturbo engine.