My new to me 21ft Thunder Jet Sonic 5.7 efi Marine Power and American Turbine SD309 with 4 degree wedge and hydraulic place diverter.
Hopefully open up new opportunities for my wife and I. No more fiberglass jetboats and no more rotten wood!
Thank you everyone hope you enjoy!
UPDATE: found the cause of the noise. broken impeller fin. New one is on the way with a video soon!