Gotta build ANOTHER engine.

regarding process for degreeing the cam, there has to be some archived threads on here on how to do it. I seem to remember typing some extensive posts on it. I taught myself to do it about 35 years ago, using a DC/MP racing manual. They stress getting an accurate TDC #1 measurement to begin with on the dampener you are going to use in your build. When you do that, I recommend match marking the outer ring and inner hub of that dampener so you have a reference to know if your dampener slips subsequently.
I have not personally used the Summit degree kit, it could be just fine. But, if it's like most aftermarket stuff, it's designed for Chebbie. If it fits or can be used for other makes, well that's just dumb luck. Be prepared to have to adapt it or add something else to it to make it work for your Mopar app.