Your question does not have a reliable answer because Dynamic custom builds most all of their converters to suit the application. One 9-1/2" could, and most likely is totally different than the next.

I run a Dynamic 9-1/2" behind my 451, and it flashes to about 4200. But again, it was custom built to my cars spec's. Call Dynamic and talk to Shaun, he'll get your car & motor's spec's and your goals and build to suit. I think they generally run around $650.