Ring And Pinion Gear 4:10 Model 25 Axles

Q: You are listing a model 25 ring and pinion set with a 4.10 ratio. When you say model 25 I assume you mean a Dana 25. I have a 2 wheel drive 49 Jeepster with a Dana 23 rear axle. I also think Dana 25 parts will fit in a Dana 23 rear end. I want to get rid of the 5.38's currently in my Jeep. Is your set for a 2 wheel drive Willys? I also assume the axle splines will work in the spider gears on a Dana 23 and so on. Thanks peewee