Hello yet again all, its been a week since i had problems lol. SO, port is finally running great. Go to start starboard and its running like utter crap. After much searching finally find the issue. Small crack in the intake manifold. But here is my issue. These are mercruiser 470 3.7LX The LX means its got rochester carbs. SO the regular intake will not work. So I need a intake manifold that will fit a 4bbl carb instead of the standard 2bbl one. I have searched parts for over 2 years on ebay and have never once seen one of these. Anyone out there have a clue where I might find one? Used preferably, I have fed these beasts far to much already. OEM is long discontinued and there seams to be no aftermarket at all.