no msd ...painless wire harness ,12 volts to hei..thanks for asking..think i found it..90% electric 10% fuel...put nice new taylor spiro pro plug wires thought i had it, went to fuel up for car show sunday,felt surge,stall,that was it.. check for fuel, tons of that (750 holley dp) no spark,the rotor which i had checked no less than 3 times in last 13 days had a burn hole through the center, the tip fell right off at the bend no way of seeing it,, thanks for all the help, this is the best site for car nuts,,,stainless nuts that is ,,,