Ok, so I got pretty much all external motor bolt-ons and now in the market for a nitrous kit. I dont need a direct port kit or anything fancy, just basic CLEAN set up with purge valve & bottle warmer. I intend to use it every now and then for the track. Looking for a nice clean set up.(not messy) I hear ZEX has a good clean set up but idk. Im new to the Nitrous kit. Im looking @ N,O.S or Nitrous Express kits mostly. Anyone with any input let me know your opinion...