Hello. I am new to your great site and I've already learned a fair bit by reading the posts. My ride is an 02 DBL cab 3.4L which is pretty much stock except for a K&N filter system and aftermarket wheels. I want more get up and go so I was thinking TRD Supercharger until reading about gearing and URD package. I don't know what my gearing is - the truck has the towing package, if that helps. What gearing should give the best gain? Also, seems the SC thought has gotta be paired with the URD - what is the cost breakdown of all these improvements? THX for advice and MERRY CHRISTMAS!!