MRL Performance 505 Street Killer

My next combo will be a 4.15 crank in my 400 block with the 6.76 Eagles I already have. Heads will be whatever aluminum I can find when the time comes. I want the powerband just like this motor if its possible with a hydraulic roller and some beehive springs. My Fast EZ efi is only rated for 600hp and Indy just came out with a Modman for the B engine so if it comes to that I can run 2 throttle bodies.