We have many late model and older UD 1800 2000 2300 series truck differentials/rear axles available with several different ratios. Gear Ratios can be found by removing drive shaft from rear end and looking at the end of the pinion shaft going into the rear end. Rear Ends come with a 90 day warranty. Your satisfaction is guaranteed. We will ship world wide. Call for pricing, availability and shipping. Call 1-877-564-6307 if you have any further questions and ask for Ronnie, RT, Doug or Louis.