If you really want to correct everything in the engine compartment then the engine & trans needs to be pulled. At the very least the engine. Firewall needs to be touched up "black out", A/C box needs to be pulled if you want to paint the firewall correctly but could possibly tape around it, remove booster paint, clean paint off pad, I would find a correct intake and qjet, set of painted valve covers. I know there is more but just depends how detailed you wanna get.