just checking my options, I have a rebuilt 273, putting a D4B intake on it going in a 64 valiant with manual brakes and steering.I have the stock 273 exhaust manifolds and a set of 69 340 exhaust manifolds. I want to go with a dual exhaust ideally with the 340 manifolds. Hypothetically could i order the 67 to 69 TTI 2.5" head pipes to fit the 340 manifolds and the rest of the exhaust get the early 64-66 stuff?
