From everything that i have read about this mod (original mod for 93-94 probes) is just a cheap fix for dead disty problem. I am no expert by any means and may have interpreted the information wrong, but i think you don't get any horsepower increase, just a more reliable car. By reliable, I mean easily replaced chevy disty (cheap). Search for " Joe Bialy" here or at probetalk.com for the complete story. I am still waiting for someone who has finished testing this upgrade on a 95 mx-6! I am dieing to mod my mx-6 with this trick!
Any one who has finished a 95 with this mod please email me : email@example.com