This TransGo shift kit is perfect for those looking to reprogram their valve body and achieve better performance. It includes springs and other materials made of aluminum and tefflon, ensuring durability and long-lasting use. The kit is compatible with 2WD and 4WD drive types and is suitable for cars and trucks manufactured in 2006 and up. The package does not come with any universal fitment, and it is not a custom bundle. The manufacturer part number is 6L80-TOW&PRO, and the interchange part number is also the same. The kit is made in the United States, and it is a great addition for those looking to improve their car's performance.