I put an ACD clutch kit in my GTO a couple of years ago. I don't remember any mention of Heavy Duty, so maybe it was a std. one?? It was "Hecho in Mexico"
It's great around town, good pedal. When running it hard, it slips a little between gears. Could be a possibility that I didnt observe the proper break-in period, though
The last two Ive built used Mcleod and CFIIs. I was very pleased with the pedal on both of them.