Brainstorming an Idea, whats your 2 cents

Before I even think of a cam, you'll need a better intake and larger exhaust pipes.
Then for the 408, I would for surley dump the widage tray and get a deep pan and tray set up from Mildon or ....And large tube headers.

All parts from car or truck are the same basicly, do not worry. Theres just a question of balance.

Cam recomendations are a lot like what color socks should I wear with my hair style?