The best replacement for msd is accel.

The best alternatives to msd are rated as following:
★★★★★  accel
★★★★  mallory
★★★  hei
★★  pertronix
★★  mxd
★  crane
★  accel coils
★  accel coil
★  ngk wires
★  stock distributor
★  luminex
★  stock coil
★  magnecor
★  crane ignition
  mallory ignition
  mallory distributor
  ac delco wires
  screamin demon
  taylor wires
  jacobs
  ford racing wires
  pro comp
  hei distributors
  screamin demon coil
  hei ignition

Your alternative for msd is not listed? Suggest!
Speaking about msd, one probably shouldn't forget about hei.

Other search terms related to msd and their ratings are:
★★★★★ hei
★★ megasquirt
★★ pertronix
★ cipla
★ e3 spark plugs
★ duraspark
★ launch control
mallory
You have in mind a companion for msd and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of msd in all years. Click on graph for more.
msd
accel
mallory