Here is a sample lap at Bathurst in the cooking GT4 at an amateur drive day recently.
The outright GT3 lap record is 2m 01.286 in a fully compliant GT3, fastest lap in a de-restricted GT3 is 1m59.2910
https://www.youtube.com/watch?v=glg1aFUUkLg
These are apparently a "good thing" but at AUD300K, way out of my price range, however aspirational it is