As it is intended design. He will have more of a bone stock motor. 8.6:1 and a 256 cam. A Stealth?Really? Talk about a wasted intake. The engine itself will fall flat a little over 4K, so the SP2P is a match. But it will have tons of bottom end torque before it gets there. PERFECT truck engine.
I did not look up the cam specs, I thought it would be a fair bit bigger than stock but I will take your word for it. I know the cam in my 68 D100 is not a good match for that intake.
