318 head pipes 69 barracuda
i know it's a lot of dosh to throw down, but here's a 2nd rec for TTI head pipes. i've used them a bunch and the fit is absolutely perfect, parts are top quality.
it's a small price to pay in the interest of not fiddle-******* around with some low-rent junk and burning a day while being frustrated because you need to order some dumb reducer or connector or whatever.