In additon to them still not fitting, proven with a 67-81 listing and the shoddy looking installations, I have never seen an ounce of documentation that shows that, pos, I mean pypes offeres anymore preformance than any other system.
Do as you like, but when it's time for a new exhaust, I'll take it to one of my local shops and have a custom bent system installed. Then again, I'm pretty fussy, with the exhaust system looking as if the car doesn't have one, so you migh like haveing the car look as if its dragging around a set of stainless steel balls under the car.
