340 vs 360 confirmation

68-71 340 was most desireable exhaust nmanifolds .But I wouldnt pass on the dirt cheap ones you have lined up... but now you know why they are dirt cheap. :thumbsup:

and I second ditching teh headers been there done that also. The thing is on an A body the good headers cost as much as the 68-71 repop manifolds so its a either OR... if on a budget pick up your later manifolds and run em. Good luck.