Sardegna race time

What sort of total time are people getting at Sardegna? I want to lower the total race time as much as possible. What car and times gets it the fastest? I'm using a controller and TV.

I can't seem to get it under about 25:30 or so, but I hear of others doing it a lot quicker. I just did it with the Porsche 962, a clean fast lap is low 1:37, average might be 1:38/low 1:39 with traffic but up to 1:41 if there's lot's of traffic. Pretty much the same story with the R92CP. I pit once at the end of lap 8.