The Dana 300 is largely considered one of the best transfer cases offered by Jeep. It comes of no surprise that people will want to use it outside of its original application. #52-9810 is a 10 spline input shaft to replace the original 23 spline input shaft on the Jeep Dana 300. Customers who typically purchase this input shaft are planning on utilizing the Dana 300 up against the Chevy SM465 transmission. It should be noted that this input shaft is normally sold in kit #50-9810, as this kit includes the adapter required for this applications. In the past, we received a few requests for purchasing this input shaft separately.