OK, you already have 400hp and that was stock, and based on your dyno pull, you have about 430 now. You honestly think you need $10,000 to get another 70hp? My brutha, for 10 large, you could be at 600hp! My STRONGEST suggestion is dependent on what direction you want to go. If you want heads and cam, give Cartek a call. If you want a blower, go with a ProCharger (does NOT use motor oil for lubrication). In both cases, your looking at maybe 5k, and with the leftover money, you can upgrade the clutch, halfshafts, output shafts, and driveshaft.