93 318 build help!!

For a cam, I'd look to Comp cams in there section of smog legal EO numbered cams. There mild enuff to still use the OE intake and injectors but will add some nice power. Low end grunt should improve well.

There are several header manufatures of headers on the market for the Dodge V8 in a truck. Hi flow cats are also available as well as the cat back systems. Smaller pulleys are also out there. 1.7 rockers and behive springs.