Thanks Rick. I'm kinda new to all this internal stuff. I assume a stock shaft wouldn't need clearanced as it's the same shape all the way across correct? I do have an MSD dizzy. What do I need to do to make sure this goes smoothly the NEXT go round. I never sent my builder the dizzy. I also noticed the MSD dizzy is taller than my stock one was. I had to ditch my ST brace because of this. Does that sound normal? Or is this a sign of what you speak of?