good looking car . a jet boat cam will work good in a car. have used boat cams in cars and trucks .on the roller cam there is more than one reason to go to roller cam on a big block they can eat flat tappet cam . i think if you go to your second pick you will be ok with your cr . if you go to more lift you may have no piston to valve room . you may want to get that air fillter out and put a KN air fillter in