Mexican Mopar 360: i need to know how to have more horsepowers

Judging by the rust in the cowl/firewall, it's probably a good thing it can't go more than 180. Ima thinking you need to prove the integrity of the chassis first. If that visible rust-out is any indication, theres gonna be other serious problems, Say the frame rails and the inner apron to firewall, and apron to frame, areas. And the T-bar anchors.