If you asked the majority of car enthusiasts what was missing from the Porsche 911 line-up , I have a suspicion pretty much no one would answer with a roofless 911 GT3 . But in a genuine case of “what if” Porsche has done just that, and from the first reports from the car world, it’s virtually every bit as brilliant to drive as the fixed-head GT3! But in all honesty, this was pretty much unheard of, like a decade ago. No one in their right mind would have even thought about a convertible GT3! It’s a purist’s car, to be driven hard, on a knife’s edge of bravery and capability (likely limited by the driver, not the car). So what to make of this new open-top GT3 S/C? Is it blasphemy, or pure genius?  It’s almost as if a client of the Sonderwunsch program got the idea to do this, and Prosche ran with it. It’s so unexpected, given the purity of what the GT3 represents in Porsche’s lineage, that it feels a bit odd, a bit dirty, a bit sinful.…