AFR 180 heads, solid lifter cam, forged rotating assembly, and port match your Performer intake to the heads. With a camshaft large enough to get that kind of hp, you are going to be reving the engine to 7000 rpm to reach those power levels, and it will not be very street friendly. It would be a lot easier and much less expensive to accomplish those numbers with a 383. But if your heart is set on a 327, more power to ya!