Something like this? I'd attach a .kmz file but it's not allowed. Just kind of guessed at the layout of it going off of a basic track map and the 2001 imagery on Google Earth. I'll admit I'm not sure about the placement of the first turn and moved it around a couple of times. Didn't feel like georeferencing the track map...

I noticed this track wouldn't be possible as it was made in GT4 because the intersection around the Start/Finish line was changed. The road going E/W now goes under the intersection and the grade separation makes the first and last turns impossible.

HK_GE.jpg