300 is easy to get on a nitrous vr6 a buddy of mine with a garrett 268 chip, 2.9 clone intake, and a 2 1/4 exhasut, stock headgasket and arp headstuds,(must with nitrous), and a 50 shot got 299 at the wheels,

stock chip, arp studs, and a 75 shot you will be good to go,