Gary Hall had a Pantera he called "Big Red". It had a power, retractable sunroof from an '80's 911. Gary Spratling's Pantera has a removable roof panel but I don't know what it's from (Don Byars will). It looks like a Porsche 924/944 roof panel to me. A sunroof installation would not require reinforcing the chassis, like a targa top installation does.
I recall hearing Pavesi added 400 lbs of chassis reinforcement when building the factory targa top GT5-S and Si Panteras.
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