Ken Oikawa Ken I number I have is MSD8595. 370.00$ Jegs. Make sure that it is a double pickup. I was at E-town talking to one of the techs and he said that the upper housing assemblies can be swapped from a SBC to the FE distributor shaft assembly to get the dual set up. Check with MSD before you buy it. Make sure that the phasing is OK. I removed all the fins on my distrib but 1 for the firing of number1 cylinder in the msd. Speedpro needs a crank signal and cam. I have a Sequantial box with spark and fuel control. 8594 is a single pickup msd. My info may be wrong
Check for yourself. Rick Lake