I didn't see any....please explain mate ??
No cover over the blower belt ??
Here's a couple of things I wouldn't do, would change, or believe could be done a little differently
Add a belt guard to protect that fuel line with belt failure.
Get that fuel line out from within the belt area
Move that fuel cell. Most blown alcohol engine fires are ignighted by the pipes. So I personally wouldn't stick the cell between the pipes
G force will work with you with a forward mounted cell, not rear mounted. That's a big ask for the pump to operate like that.
Rags don't make good fuel caps.
Barrel valves are set with leak down testers, not ears
Engine idle is set with air gap, adjusted if necessary by air bleeds, not barrel valves
Cam surge/blower surge is for wank factor. Engines don't like it
Never ever grab a throttle shaft by the barrel valve end. It twists the shaft, (return spring is on the other end of the shaft) and alters the barrel valve setting, although in this case that really doesn't matter
and changes the air gap of the throttle plates.
That's just a couple, but the most important issue I see, is where the **** is the blower restraint? No burst panel, running sheer studs and no restraint. It's running an Enderle Alcohol barrel valve which is notorious for lean backfires unlike the K style. So when it coughs under the rotors, the burst panel that's not there to release the pressure will pass that responsibility onto the sheer studs. They'll do exactly what they're designed to do, sheer, and then whoever is skiing behind the boat, or travelling behind in another boat is expected to catch the 150+ lbs super charger and injector.
That's some things I see wrong, IMO.