Either the factory impeller or a twin row from Impros. Expect a top speed loss from the twin row but in return, you’ll gain massive hole shot performance.
Have you ever broken off the mounting tab that's in the vice? That seems like a lot of force on that one tab. Do you use the same method on removing the SS sleeve?
I own a custom built inboard jet boat with 300 Rotax. Current impeller is a non name brand 4 blade and was curious if you recommend a certain impeller that you run in your jet boats . I know Solas makes a twin impeller SX4-TP-13/16 but im looking for little more top end