Well cleaned out the garage of some unwanted parts/tires etc. Now have some cash burning a hole in my pocket which is slated for the REX. Question is if you had to make a choice between MSD or Muzzy Pros what would you do? Currently motor is stock only minor upgrade is UNi with billet adaptor. I could do one not both for now. What's my best bang for the buck. I'd be interested to hear from some tuners as well on what they would choose.