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I see the letter TS FAST or T5 FAST. Google turns up nothing for either. I'm guessing they are eBay headers. It's a gamble either way but provided they are installed properly, they should be OK.
They are Top Speed Pro1 Performance headers. Or exactly the same as the Gibson and JBA headers available on Summit, Jegs and Ebay. Going to skip it after reading questionable reviews. Either going with stock manifolds or waiting for a deal on Banks or Doug-Thorleys ro pop up. I did see a set of Banks on Ebay for $900 OBO, complete kit. Thinking about it....
Yet when I said the exact same thing it was ignored...
You said you would skip them because there's a reason the seller didn't use them. And you were​ right about that. But that reason, at least according to the seller, was due to them not fitting in his van due to the design of these headers. Which does make sense if you look at the design, some of the tubing curves up and around which wouldn't fit in a van due to the tight clearances. The Banks, Doug-Thorley and even the Hedman have a straight design. But i found bad reviews on the Hedman as well. Upon further research I discovered there are some possible quality issues.
Thanks for the input though, I value everyone's opinion. A you guys have hopefully saved me from more headache's.
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