Schumacher Tri-y's

I have them on my 70 Gold Duster with power steering and an A-518 overdrive trans. I modified mine by cutting off the 2.5 inch collector's and going to 3 inch ones and ditched the two bolt flange and went with V-band style connectors. Go to my picture gallery to see photos of the modification. I had the dent the driver side header a little to clear the steering box. As noted in previous comments you can grind the box instead. I'm quite happy with mine. Very easy to install and remove, starter not trapped, and all spark plugs easy to change. I drive mine to the track, no trailer. A lot of guys say they will kill the percormance, and I'm sure they cost some power. My car has run a best of 11.48@116. Go to my YouTube channel; Doosterfy and see my videos.