Ignition for 360 magnum

The stock style distributor and the 4 pin HEI module is all you need. The MSD would be an add on not needed to run the car. Helpful? Only in low rpm settings. AKA, start up. slow cruise, low rpm Hwy driving.

Rammer Jammerthinks there good stuff, I have nothing but piles of MSD junk that has left me stranded multiple times per box.