Now that's the ticket! The discarded 617 manifold would provide five possible flanges for the last hole - plenty to experiment with.
A natural plan would be to put a 616 exhaust manifold on a 617 engine, I think it would fit on the front four. Then you wouldn't even need to cut and weld the manifold, though you would need to come up with something to cap the freed hole. -- Jim
-- OK Don, KD5NRO Norman, OK "The Americans will always do the right thing... after they've exhausted all the alternatives." Sir Winston Churchill '90 300D, '87 300SDL, '81 240D, '78 450SLC, '97 Ply Grand Voyager
