Finished suspension lift ( Rock Krawler 2-1/2 Expedition Lift), new wheels (Pro Comp Hammers), and Nitto Ridge Grapplers 285X75R17. This is on a 2012 Jeep JK Rubicon with a 6 speed manual transmission. Have run this for about 6 weeks now and feel like I've lost some of the low end. I spend about 60% on pavement and 40% on dirt roads/trails. Mostly for hunting or fishing. I'm down is Southeast AZ in the Fort Huachuca area but do get up in the White Mountains around 4 times a year. Looking at 4.56 gears or 4.88 gears. Also looking for a good shop to do the work. Any suggestions?