It is really easy to install. You will cut the wire going from the igniter to the coil and make the corrections there. The ecu wont even know its there.
YOU WILL NEED A 8910eis TACH ADAPTOR. This will amplify the signal going into the MSD so it can read it. There is a good diagram I was given, I will see if I can find it again.
Here it is:
http://www.mr2.com/forums/efi-corner...tall-help.html