I've almost got all the pieces to complete my Nitrous setup except for the ignition. I currently have the stock HEI with a Pertronix Flamethrower Coil & Module and a set of Taylor 7mm wires. I know I'm going to need something to retard the timing, even though I'm only runing a 100hp shot. Is my only option a MSD Digital 6 or Mallory Hyfire VI? I need to put my cash into other areas, so I nead the least expensive method.