1970 duster with electric cut outs?

I used the TTI 340 step headers in a 68 416 Barracuda and they were the easiest install ever! But I do have the RMS complete front suspension.
I used Super Trap Header mufflers that do absolutely nothing in the way of Muffling anything! I'm planning on installing the TTI 3" X pipe with cutouts and mufflers. I'll be watching this thread.