Hmmm, an interesting conundrum. Aluminum heads on an FE long stroke with small EFI throttle body. RPM limited to 5000. Very long intake runners and tri-wye headers. Torque band tuned around 1500 to 4000rpm. Lighten rotating assembly. Think F250 truck approach. Maybe even sleeve bore down. Very rarely do you really need more than 4500 rpm on a street driver. Throttle response makes an engine feel more powerful than it is. You can customize your fuel curve within limits using integrated ignition timing so why not go with the FE if that's what you want.