Stock 69 340 head pipes

Yup, TTI head pipes are the way to go. Make sure your engine is located as per factory specs so there are no clearance issues. The measurements are on their website but I think (going from memory here) the crankshaft bolt is 5 1/4” from the top of the k frame and the crankshaft bolt is 1 1/2” closer to the passenger side frame rail.