My Formula 242SS had a 454 but mated with an Alpha since it was an 87. The Bravo didn't come out till 88. To mount a Bravo is easy to just follow the mount plate and drill two holes. Then a fluid reservoir for drive fluid and the raw water pump assembly on the engine. WOT hole shot would twist the shaft in the drive so I will not get crazy with it but it will run WOT for full speed as long as it stays cool. The drive shower is critical!!! My old Alpha had so many problems with it that I gave up on a fix and since replacing it was the only resort I pretty much had there was no way I was going to put another Alpha behind this BBC. Oh yea as far as the impeller on a Bravo system it depends on how easy one can reach the bottom of the engine. The pump is mounted lower than the water line in an effort to flood the impeller. My LS is much easier than the SS due to the bilge design.