i am looking more for about 850hp not 950hp, but i have not decided to stay with the 540, or go to the 572. the 540 dynoed at 634 with ported gm rec port heads, and i think i am going to go with a set of brodix, or merlin heads but i have not decided. the motor is 634hp without the procharger, i should be able to make 850 easy with 6lbs of boost. my engine builder said the 540 is a stronger motor than if i stroke it to the 572, but if any of you have a diff. opinion i would live to hear it. as far as a dry sump goes, who makes a good one and what do they cost. if i do not go with the dry sump am i just loosing hp or am i going to blow my motor? any input is great.