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Bought em used back around 2005 for a project that got sold. I was told by previous seller they are TTI, they look like TTI, although there are no stampings on them anywhere? Pretty decent shape with some minor surface rust in areas where nickel chrome wore off. One area that got relieved for the pitman arm clearance. One area that looks like starter arching took place? The drivers side mounting flange looks like it has been shaved flush with mounting bolt flange areas. Im guessing to gain that extra 1/8" clearance?? See pics with circles. These came off a 67 satellite,440 4spd car. They were going on my 69 superbee. As to fitment and questions see link below for TTI website info. Buyer pays shipping from 17603. The price is 490.00.
https://www.ttiexhaust.com/TTi440-200.htm#Fitment
https://www.ttiexhaust.com/TTi440-200.htm#Fitment