I have a 21 ft katchina, I went with a stock 455 to get it on the water this season, and got it for a killer deal......next off season I want to make some power in it not to much but like 500 to 600hp.......and sugestions I really like the idea of turbos caause they are rare to see out on the river.....any sugestions on that? What all is involved in running turbos? Thanks guys