I have also condidered the idea of a targa, and decided against for all the reasons Bosswrench stated. However, I've wondered if it would be possible using a 4 point roll cage that was welded to the frame through the rear bulkhead and near the front fenderwells, as well as the normal attachment points. Additional welds could be made near the roofline in the rear and on the A pillars in front. True, the visible rollbar might defeat some people's idea of a targa, but it seems that a roll bar could take the place of the roof and posts for chassis rigidity. I have no intention of cutting up my '72, but I'm curious as to what others think about the feasability of this idea.
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note- I think Gary Hall's targa has a roll bar integrated into the windsheld and the targa bar. FYI, for the racing Group 4 circa 1972, the factory put together an 8-point roll cage that tied into the front end thru the front firewall, the dash area floor, behind the seats to the floor, through the rear window to the rear wheelwells & suspension pickup points and a cross-brace where the passenger seat would have been. Later, full-tube-frames were employed to further stiffen the car and reduce weight. And this was with the roof still there!
[This message has been edited by Bosswrench (edited 03-01-2001).]