72' 340 Drivers side HP manifold vs older HP manifold

I agree if you're trying to get the car back to stock. If the rest of your car is all stock then it would be best to use original (by year) manifolds. You said you had a line on a set of manifolds but you didn't say how much they were selling for. If you're not trying to get your car back to how it came from the factory I wouldn't spend too much money on the "correct year" manifolds unless you can get them for a good price.

treblig