I have a set of very nice headers. Hers some info on them. I bought them and never used them. I paid $575 plus shipping. Have picture of them in the box if interested.
These are a limited run of headers that the gsca buick club got together to have done. They are basically a copy of the poston headers (now out of business), except a couple quality tweaks. Mostly better welds. The Poston headers were awesome headers. These headers are made by Headman. Let me know if interested and I will get you pics.