While we're in cuckoo land, why not contact Al Melling and get him to rustle up a pair of AJP V8s.
Dry Sump, 450hp coupled with 400 ftlb, 75 degree V so fit side by side, 120kg max each. Will happily sit at 7 - 9000 rpm for a Tuscan race but produces all the torque at around 5000 rpm so great for our purposes
Flat plane crank too so would make a brilliant sound!
Header pipes need to be exact length per cylinder to get the whole benefit of the flat plane but doable. Reversion would be a problem but easily solved with a simple 4 inch drainage system. Might want clay rather upvc though.
Now we've just got to think about drives. We've already established the Bravo 1 as fairly bullet proof with petrol engines so let's get one of your 2 into 1 thingys but the other way round and have a single drive to reduce gearbox losses and add excitement to the drive with the ensuing propwalk off a 40 inch pitch.
Or even get him to do one of them speed twelve jobbies where he cuts two speed six engines in half and glues them back together as a V12 and gets 800bhp out of 250kg and then ask him to do the same with a pair of Bravo drives. Side by side counter rotating props out of one drive.
Rubbing strip would have to be faired out, cleats would have to be invisible, nav lights should be unrecognisable as lights and boat would have to be painted in a flip colour of course.
I'm not helping am I?
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