There was a reason Supercars, Nascars and most motorsports binned the 23deg head and moved to 18deg heads and beyond. This combo is proof that the right head can achieve plenty.
Utilising Trickflows 18deg head, Jesel Rockers, custom ported 18deg intake, 1100cfm APD Custom Calibrated Carb, and Custom Diamond Pistons with a light ring package, proves a lot can be achieved when you use the right ingredients.
775hp/610ft/lb of torque maintaining good streetability, whilst using 98 Octane ULP.