[WARPed]

I run the MSD crank trigger with their programmable timing computer in my 69 GP. First you have to lock out the distributor so it will no longer have any control of timing, then you will set your total timing to whatever your motor likes (mine is 34*). Once that is determined you can then go about setting the total amount of timing in the box (this controls your initial timing), rate of advance (slope) and what RPM you want the advance to begin. It is all there in the docs; I had to read them a few times before I got it all figured out.