EFI or Blowthrough?

Ms1 is the basic and will run a v8. I'm running ms2 and it controls fuel, spark, boost control. If you want the whole deal then go ms3x. It has the most option but costs a little more. Your best bet would be to email an approved vendor, tell them everything, engine specs, trans, tq, tires, ignition module, distributor type, turbo. Then tell them what you want to do with it. You can use it to control fuel or ignition or both. My setup will use a MSD CD ignition box being fed a signal by ms, that takes signal from you distributor and the plug fires. It's all a little hard to read into at first but you get there.