Transmissions for land vehicles; Transmission mechanisms for land vehicles; Automotive transmission parts sold as a unit; Automatic transmission valve body parts sold as a unit for installation in the valve bodies of vehicle automatic transmissions; Valve body kits comprising separator plates and springs for installation in the valve bodies of vehicle automatic transmissions; Torque converters for automatic transmissions of vehicles; Automotive transmission parts and do-it-yourself kits containing automatic transmission parts and installation instructions; Combination transmission control units and gear shifting mechanisms for automatic transmissions sold as aftermarket parts for motor land vehicles; Land vehicle transmission rebuild kits, sold as a unit; Land vehicle transmissions and replacement parts thereof; Automotive transmission parts and do-it-yourself kits containing automatic transmission parts and installation instructions