A bum transmission can seriously impair your driving capabilities and a manual transmission assembly is made up of replacement and upgrade parts for heavier duty clutches, cross members, skid plates and more. 4WD carries assemblies from Omix-ADA to upgrade manual transmissions that depend on a clutch. Knowing the exact specs for your entire assembly is a good idea before you attempt to swap out the one in your Jeep. This means knowing your drive ratios and even bolt patterns to ensure compatibility. 4WD is a destination when you want to replace your manual transmission assembly and has expert installation available to help you with a smooth transition.