LMPerformance introduces J&M Products produces adj-control arms brackets, ball joints, lower control arms, panhard rods, brake kits, shock tower braces, brake lines, shock tower braces, subframe connectors, upper control arms for your performance vehicle. You can trust the J&M parts because J & M has proven their parts are of excellent quality. They have been in the business of manufacturing aftermarket parts since 1963 and constantly improve existing products. If you are in the market for one of these parts for your Camaro, Firebird and Mustang you have come to the right place. Let the LMPerformance team help you with your selection and get a great price too!