For those of you who want to do a gear swap and are stuck on what gear ratio to choose for your tire size this may help Use this site here it also has some good tools listed under "calculators" to use, I personally used this site when choosing the gears for my truck http://www.ringpinion.com/Calc_RPM.aspx Another site to check out is this one I bought my lift from these guy's and they are Unbelievable to deal with also. Calulators and coversion charts here http://www.trucktoyzperformance.com/support/?sub=convert Enjoy Boys ..........:character0182: