Thanks,Cab..Gary..and Mike! Gary,you really think it'll make those numbers?! I NEVER would have guessed it to be that high....but, Sean Meyer...formerly from Best Machine,estimated around 660-670 horsepower! We'll find out shortly! Gary..on your chassis dyno,my peak horsepower was made at 6,000rpm's. With the increased air flow...what's your guess on the new peak rpm???....63-6500? Thanks guys!