This could be possible. I had the opportunity to run a 5.0 with the exact mods as the one you ran, at a Shift-S3ctor side-by-side roll-on event. The owner of the 5.0 showed me a dyno sheet of it making 451 RWHP, so I was impressed at the delta from a stock 5.0 which I'm assuming is maybe 350-375 RWHP. Your ESS 575 makes what, around 500 RWHP?
Daily: 2015 991 Turbo S White with Gloss Black Aerokit / GIAC
Track/Airstrip #1: 2013 e92 M3 DCT / ESS VT2 650 S/C / Akrapovic Evolution / StopTech BBK
Track/Airstrip #2: 2011 997.2 Turbo S PDK / GIAC FBO / GMG suspension build
Beaterz: 2013 X5 3.5 Sport, 2015 Wrangler Unlimited
IG: longboarder949; YouTube: https://www.youtube.com/channel/UCT1...eoFBszPIK0gf9w