BBK 2542 Subframe Connector Kit with Seat Bracket Supports - Full Length - Bolt In Or Weld In for Ford Mustang - Powdercoat Finish BBK is your Number One Aftermarket Performance Brand in the USA - American Designed and Built Extra Heavy Duty BBK Subframe Connectors with Seat Brackets for Even More Strength Improve the Handling of any Mustang and Reduce Flex Bolt In or Weld In (Recommended) they Connect the Front and Rear Chassis Subframes to Provide a Stiffer Chassis Precision Robotic Welds and Baked On Powdercoat Finish for Durability Fit all 79-93 Mustangs Feel The Difference Immediately Especially on Convertibles