Hi,i would like to change my engines:2x330hp 7.4 v8 mercruiser that stay on magnum marine starfire 27.....and i would like put on about 420 hp for engine and take it around 450/470hp with the exhaust system!!!1
But i'm very uncertain for the choice of the model ,could you give me some advice?Remember that i love the rumbling!!!
Thank's federico.