2:14.3xx that's what I got in 1st lap ( medium pace ) after adapting the gear ratio control you provided and my old GT5 build at Bathurst, still with no oil change, SS tire. It has 59/41 weight distribution, closest I can get in GT6, 1400+kg, low aero mode, real life V8SC alignment range, rear spool 60/60/60, surprisingly, no wheelspin issue at all, a 5 minutes job setting it up
With no ABS I ran 3/7 or 3/9 BB, this time front tends to lock first, unlike the C7 Stingray
The Falcon bounces around like mad kangaroo here
The AU XR8 only topped 271kmh at Conrod, to put into perspective, my Team Lark Mclaren F1 GTR, with high aero can top 290+kmh at Conrod, the F1 is insanely grippy, with 600HP/1140kg capable of 2:08s on SH, it's cornering speed is higher than the Falcon on SS even when using lower aero than Falcon. Weight rules supreme at Bathurst.