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I have put a 300 "Tempest" Mercruiser SBC w/ a B&M 144 Supercharger, in my 1987 21ft chris craft scorpion 210 limited boat. And i might want to go to a SBC 400 or go ahead and put a BBC Mercruiser 502 "bulldog "in the boat. The outdrive is a Alpha 1 gen 1 drive and im sure with the "Tempest" i've reached the power limit on the drive. Any thoughts on going to a Bravo 1 vs TRS or something else
 

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drive change

go with a bravo, youl have to baby it a bit, but if you do it will last. Trs includes a transmission and is extremely heavy en large. bravo xr or imco would be next step up, but unless you can get a good deal used lots of bucks, hope this helps:rolleyes:
 
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