New to the forum so take it easy on me. :) I own a 1991 Stratos 274 (17') with a Mariner Mag II 150hp that I have no increase to approx. 175hp turning 6200rpm, 150 psi compression, 200 header, cf reeds, heads by Jay Smith racing and running a small gear case with 1.78 gears and 22 or 23 pitch...
