I found some Headman Headers for my amc 360. Do you all recommend them? How much horsepower do they add. I have heard alot of people say that they leak from the flange, the sales man recommended different gaskets that would seal really well. What are your opinions? these headers are $190.

i used them are a good product get good gaskets and header bolts that have locks and keep them tight they will work loose but summit has some good fenderwell headers for around a hundred dollars that will probably get you the same service .i now have a set of them and have been in use for about 6 years have a little dents and some surface rust but still work good a little more than may 2 cents