Best motor for 69 Barracuda

Best motor for a 69 cuda would be a supercharged 572 HEMI with a 6 speed (manual) tranny and a Dana 60 out back (I'd go with 3.54 tru trac gears but 4.10 with work) with mini tubs to flush frame rails 3" inboard spings and at least 325s on the ground. Oh and the motor has to be EFI! Well you did ask what would be best for a 69 Barracuda :twisted: