[AD removed for archives] ------------------------------------------------------------------- Amazing Diet Patch The fastest - Easiest way to lose weight! Try it now FREE! caacOlIb7yoMza/MyDietPatches ------------------------------------------------------------------- Jeff, It depends on your carb. If your running an older Afb or Holly, then the headers will be very effective. They will be a good increase over stock manifolds anyway. One reason headers are so effective with these engines is that the carbs naturally tend to be on the rich side because they are not the worlds best technology. So the headers help scavenge quite well and improve performance in the older engines much more that the new ones. A couple of suggestions. Take your old headers off and either mill the flange or straighten it. It is not as hard as you think. I would also suggest investing 30 bucks in Copper gaskets for the headers. They will last a lifetime, and not leak. Earl I'd like some opinions on headers vs manifolds on a mild 413 in a 64 Polara. I have an old set of headers that I can't get to stop leaking at the head. It's probably a bent center flange, but I've had 4 different sets of gaskets in it, both header and stock steel gaskets. What I'd like to know is how much performance difference there is between the two. Right now I have a used 413 4bbl, 509 cam, headers/Flowmasters with an H pipe. I'm considering going back to the stock manifolds from the 413, which is out of a 65 Imperial. What do you guys think? Jeff [AD removed for archives] ------------------------------------------------------------------- 4 Free Low-Fat recipes caacOlzb7yoMzf/PermissionData ------------------------------------------------------------------- ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. b7yoMz.