Mustang Gear Swap/Wheel/Tire Change

Two of the most popular modifications for mustangs is to change the ring and pinion ratio and/or change wheels/tires. Especially for drag racing, to optimize gear/wheel/tire setup for the best ET. Please provide a way for dealer technicians to correct the speedometer after a gear swap, wheel or tire change. Or maybe offer a Pro-Cal tool (or something similar) that keeps the factory engine calibration yet allows the customer to modify gear ratio, wheel/tire combo. I would purchase this in a heartbeat.
03/04/2013
Get a Shelby Ford HONE-O-DRIVE instaled at your local Ford Dealer for all your rear wheel drive vehicles and for those front wheel drive and all wheel drive vehicles go to your Local dealer and askt them to Super Snake your ford with parts from Shelby's Performance Corner and Ford Racing's SVT Team.