Injection system

So I've been looking on summits an jets sites at a retard set up for boost, but they all seem to say they need to be ran with msd ignition. Am I reading this wrong? I have the mp ignition an the orange box, will I have to switch ignitions to mad to get a retard system to work?
I've also been looking at the 1stage for low boost water methenal injection kit in case I have to switch. I'm only going to be running 5lbs boost but my comp may be a tad bit high. 9.5 maybe.