Believe nothing you hear and half of what you see.
It's too loose down low and too loose up top. Do a search on them. Their most popular converter is the 9" non lock up. That is one hell of a converter. I had a PTC 10" lock up. Couldn't stand it. Got rid of it and went with a Pat's 12" lock up. Ran that for 7 years all the way down to 11.3 locked. It was very good. Don't hear much from them now though. Brian on Turbobuick.com facebook has a post on Oct 3 for a roller cam.