Nice! I had an RCC Super Ultra kit with a GT40r on my busa. Thing was stupid fast. Made 450 whp on 93 octane. Liquid intercooler. Funny thing is I switched to a billet wheel GT40 and lost 50 whp at 18 psi smh. BIGGER isnt always better lol..... Im sure on C16 turned up it would have made way more power.
But I had to have a complete new header made for it to fit and couldnt just throw the old turbo back on smfh. I ended up selling after that I was just tired of dumping money into it.
After that SNAFU the fab guy did all my machine work for free so we went wossner pistons & rods, 1/2" head studs, Bill Pippard did the case prep & oiling mods, APE did the head with stainless valves, heavy springs, etc. Billet 2pc intake, billet TB clamp, 80lb secondaries, Bosch 044, AMS2000, NLR boost comp clutch, blah blah blah.
Ended up at 460whp 24psi non-intercooled on E85. Tuned by Ryan Schnitz. 262 on 8psi on 93.
I actually miss the HELL out of that bike. Does hold 4 lifetime records at Wilmington, OH and held the Empire Dragway track record for a couple years too at 8.30 @ 180.00 with nothing more than a strap, 8" stretch And a shinko.
Wanna build an RCC Super Ultra. They have one that fits 100% within stock body work and with a single exit full-length exhaust. Makes over 500 horsepower in that configuration. Stealth as hell. No one would ever know until you blew by them at 140 with the front tire a foot off the ground