don't need 42 lb injectors.. 30lb's should be enough... I have a DSS 331 stroker with trick flow 185 factory CNC ports, rpm II intake, 80mm PRO-M, 75MM TB, 10-5-1 comp, electric fan, pullies, Anderson B-41 Cam, and I'm just below 400 HP... with a custom cam (ala Ed Curtis or comparable) 400 HP...