If you are not lowering then there is no real reason to get an adjustable panhandler bar. The only benefit would be the stiffer bushings, but that will be a minimal change and not worth the cost. Your money will be better spent elsewhere. Some folks get an adjustable bar with stock height just to get the axle alignment perfect still though. The axle is a bit bit offset from the factory.
2013 Red Candy Metallic GT Premium Coupe
Black Leather, 6MT, Comfort Package, Brembo Package, 3.55 Axle
Borla Touring axle back, Suntec CXP 45% window tint, Eibach Pro-Kit, Steeda Strut Mounts, Rear Upper Control Arm and Panhard Bar, BMR Relocation Brackets, Energy Suspension Shifter Bushing