ATR mild stell headers?????

[Monte231SS]

Does anyone out there have a set of mild stell not stainless headers from ATR. I have a set on the car i bought and i'm a little puzzled? I thought when they were in business, that they only sold stainless ones. I lost my old catalog i had from them but don't recall seeing the mild steel ones. Anyone with any info/feedback on this?

 

[DR BOOST]

if they are mild steel then they are kenne bells not atr. the look identical