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.

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

Read how to modify subframe connectors for a first generation firebird hardtop to fit a convertible, brought to you by the experts at High Performance Pontiac Magazine.

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.