The engine is stock internaly! The VH has forged coated pistons and a 6 bolt main from factory. It also has sodium filled exhaust valves and roller tappets/rockers, guys in NZ run these v8’s to 9000rpm with some helper springs.
I will only be running 5psi at first and the slowly build up boost as i build up fuel and the fuel managment. 5 psi should give me 450hp to the wheels and even more torque.