I have owned Thorley headers in the past (Twice!), the last set I sold after two months because they were leaking-warping junk. I will never buy Doug's again.
Doug Thorley headers used to be good until he sold the company. Now they sell $79.95 junk headers. He started a new company called Doug's Headers, which was sold to Pertronix last year. They produce quality pieces last I heard. Hopefully, they haven't started cutting corners. The beauty of buying Doug's headers from Summit is that if they look like junk, you ship them back and get a refund. No hassles.
By the way, my only complaint about the TTI headers is the fact that you have to take the torsion bars out to install them. Why couldn't they put a slip-fit joint on one or more of the tubes like they do on some of their other headers?
I agree they are a great thing for us early a-body guys. I just think they need some fine-tuning of their design.
