Dorman Ring and Pinion --. 2000-2005 Excursion. Qualified by Dorman’s strenuous testing procedures. 97 F-250 HD. Notes: w/5.38 Axle Ratio; Dana 50 Axle; Location : Front. Location: Front. Prop 65 Warning: WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm.