i talked to a Dude that worked at OMC, he built Mod 50's for them. he said that thay took a 56 case put 2bbls on it with big reed blocks, and did the exhaust like i was thinkin, it only would make 102hp. i've heard tails of 110-115hp but can't say for sure. the said the carbs did not help it, or the exhaust. said the 56er did best with 1bbls and stock exhaust.

i'll let yas know how the 56er does side by side with a 19s