When you get that 350 cid? Why not invest in that rather than the caddy? The caddy will be your everyday car and the truck your project. What v6 did it have? I usually see Scottsdale with 302 v8's. I say get new Edelbrock Headers. I find them the most reliable. Please don't mess around with that truck like put Giant spinners and that other BS on it. Make that truck bad ass and mean looking.