Convertible Frame Stiffening

Before I rebuilt the entire suspension and steering on my '64 Valiant convertible, the slop in all the worn parts must have absorbed any body flex, or at least made it unnoticable.

Now that everything is new, there is a certain amount of flex that I would like to reduce, if possible. Has anyone installed frame connectors, or stiffened their convertible's unibody in any way?

Try this place, they have then for your car.

http://www.uscartool.com/