ATR vs Poston headers

[Maltman]

Can anyone give a reasonable difference between the two? I have the Poston's version and I'm wondering if the ATR might flow better, but I can't find any posts concerning the issue.

Just curious as I'm in the middle of tearing the heads/manifold off for porting

Thanks,

Mark

 

[corsair231]

It might be a moot point. I believe ATR is out of business so finding their exhaust might be muy dificil. I've got the Poston's and I'm okay with them but after about three years I had to have the d/s repaired in the same place that the stockers crack. I've heard alot about Arizona's and I might decide to try them in the future if the Poston's give me any more trouble.