When going to a StageI upgrade, would anyone recommend the Thunderjet or Thunderslide jet kits? Reading other posts state that the slide is a waste and perhaps the Thunderjet too. Also, would it benefit to upgrade the coil and a aftermarket ignition system? I have a 2002 RK that is carb. powered. I believe I have chosen the AC and slip-ons that I want to run. Does it particularly matter concerning the combination of these three upgrades? Specifically speaking, should one be concerned with the unrestricited flow of a particular exhaust and how it works with the rejetting of the carb. and AC used? I understand that you should Dyno the bike before and after, but is that the only way you can tell if the aftermarket parts "match" one another? Thanks for the comments and any advice is appreciated. I am new and this is my first Harley. J.T.