NPC clutch in QLD $1400, there are alot more options now as far as kits go but Im happy wuth the results.
The original assembly was 23kg and Im down to 16kg rotatating mass, no problems not report so far with drivability issues!
MPS garage sell a nice kit, Aaron weighed a fidanza flywheel the other week while I was there and came in at 6kg! He said they drive fine still!