The Goerend 48RE GT2 master rebuild kit includes all the parts needed to update and rebuild a working transmission. This kit includes a complete overdrive bearing kit, complete bushing kit, thrust washer kit, and sun gear not found in the GT1 kit. We use the best OE parts, performance aftermarket parts and build our own parts in all Goerend rebuild kits. This kit is intended for a professional transmission technician who has proper equipment to clean, inspect, test, and rebuild a transmission. Goerend Transmission is not a technical or training service. Customers of this kit are expected to have access to and be proficient with necessary equipment such as scan tools and pressure gauges. This kit does not include every part that may need replacement.