I do believe I am going to look to see if anyone offers an aftermarket detonation sensor and spark retard kit for an electronic conversion kit from points to all electronic. I have an MSD system on out 73 Mach 1, and am about to install a Pertronix kit on our 73 Mustang Convertible simply to video record how to do it correctly for a friend in Brazil. I know on our 73 Mach 1's MSD system I have a timing retarder control cox inside the car, but there is nothing tied to a detonation sensor. I, for one, would be very apt to get such a product feature if it tied into either or both of our aftermarket electronic ignition systems.
c9zx, I will see you at (or in) the rabbit hole!