Anyone installed a simple roll bar for frame stiffening/safety in their convertible?

I installed a 4-point roll bar on my 67 cuda convertible. We tied it into some perches welded outboard of the sub-frame connectors. It gave me a good anchor point for shoulder-belts. Also bolted a piece of steel pipe across the front below the radiator support at the front of the frame rails. Car was much more solid-feeling, and ride was a lot softer with the road surface roughness being handled by the shocks rather than by chassis flex.