Opel GT is beautiful! How long have you owned it and what have you done to put it in that condition?
We have owned it about a week. The previous owner put it in show condition about 12 years ago and stored it in a conditioned, carpeted garage and only took it out for shows to collect trophy's. In those 12 years, it only drove 2000 miles. For about 2 years, it has not been driven. The engine is modified (bored, cam'd, weber, headers, electronic ignition, etc...) and louder than the Lotus (in a great way). We found it on E-bay, discovered that it was the most talked about car on the Opel forums, met with the president of the Opel club to learn how good the car was and just decided we wanted it....bad. So, we made sure we won it. We ordered some new wheels for it (the old ones were chrome and inappropriate for the era), contacted the engine builder for details and prepared for the arrival.
When it was delivered 6 days ago, it was undriveable. The local Opel club president and an Opel engine Guru worked with us all weekend to get it drive-able. Vacuum leaks, carburetor jet clogs, distributor issues, all sorts of little crap due to lack of usage needed to be taken care of. Now, it runs fairly good. Still some minor Weber magic needed to get it dialed in and we are waiting for a new brake booster vacuum line and check valve (driving it without power brakes right now).
While it runs great for a 40 year old car, after we get done tuning it, it will run great, period.