What makes it different is the cross-brace that ties the subframe connectors to the convertible floor pan torque boxes for added stiffness. Here’s what it takes to install them in the car.

Follow along as we install a pair of bolt-on subframe connectors onto our Fourth-Gen Firebird, and noticeably improve its structural rigidity and ride qualities. See All 18 Photos ...

Installing bolt-on sub-frame connectors from UMI Performance onto a ’99 Trans Am.

01 The Chris Alston's Chassisworks g-Connector system (PN 5900-F10, $719) came with everything needed to install it directly onto a factory front subframe thanks to the weld-on adapters.