Not sure if this has been discussed, but I just saw an Ebay listing for an interesting 72 GT, except:
Someone put a new nose panel in, without welding it to the fenders !!!
eBay Motors: Opel : GT (item 230268332029 end time Jul-15-08 18:45:00 PDT)
Other than that, pretty nice car. Wonder how much it will sell for. It's at $5,100 now.
Dieter