I do not know what planet you were on in the 80's and 90's, and now, but the little shit-box turbo cars were no threat to the turbo Buick performance into the early 2000's. and neither was anything else being produced during those years.
Gas was $1 a gallon, so no one gave a crap about gas mileage then except a few nuts.
We would drive a GN to the track and hand the ass to many towed-in 10, 11 and 12 sec. race cars, and we were even able to enjoy AC on the drive there, as well as in the staging lanes.
It took 15 years before mainstream racers and performance people got a handle how to "control" the turbo and start to be competitive?
In the early 2000's we set a NHRA record at 8.02 with a GN, and there was also a Hemi Shootout taking place so then many of those drivers and crew came by and were amazed at 1300+ HP out of a small Buick V-6!
Our cars today still have the respect of most car enthusiasts on the street and strip. They never know for sure is it grandma's or a 9 sec. one that will "kill" them!