i totally regret buying an SR5 and not a TRDOR. but too late, i didn't really know when i bought. after yesterday at an ORV park, i finally reached the point where ATRAC isn't enough. ive considered one for a while and feel i only need a rear. however i searched on 4wheelparts and got about 100 different options. i have 285 tires and im gonna stick with that cuz im not buying a steel rear m=bumper or tire carrier. so stock gearing, which one do i want?