OP wants pump gas, a cross ram and a hyd roller cam. Which says to me that he wants something that is low maintenance but shoves him back in the seat when he goes to the track. With 572 cubes he might be able to make 700/700 with a cross ram but it might be too choked to even make that. Even with it choked down it should be good for 10's in a street car or perhaps 9's if he has the good tires and converter. OP didn't give us much to go on so we're all making assumptions. If he wants to make 800+ hp then he would probably need to go with a Indy cross ram or a tunnel ram. I don't think the Mod Man will support 800+ hp. Another option would be to ditch the dual carb idea and go with a big single plane intake and a Dominator. The factory cross ram looks cool but it is doesn't make a ton of power.