tti headers
It will be a pain in the azz! I installed a set of 2 inch tube TTI's in a 67 Barracuda on a 440. The engine and headers have to slip in place together. Place the headers around the torsion bars and tie them up to the shock studs. You have to use a mini starter prewired before all is in place. By prewired I mean use about two feet of battery cable and #10 wire. It is impossible to get your fingers or a wrench to the starter once the engine and headers are in place. Slip the engine in and work the headers and engine in place together. It will take at least two experienced people to do this. You WILL lose any and all religion you might have and lots of skin and blood. Once in place they fit perfect with very good ground clearance. As I said I installed a 440, a 383 might be a tad easier but I doubt it. It will take you at least half a day to do this. Good luck! You will need it!