im am boring my 350 40 over with flat tops and a edelbrock preformer rpm intake with a 650 holly and a 3/4 race cam from crane with a lift of about 515 and a bm 2500 stall and am thinking of using a set of 305 ho heads. what would the hp be on something like that the 305 heads ar 58 cc 184 150 valves ?