My memory's dusty but at least on the uprights the Hard Drivin's had a weird pressure brake switch that wasn't a pot, so these wouldn't be for that, cockpit might be different though.
yea from what ive found HD and RD both use Strain gauges .this has a pot .Also the brake and gas are together on RD i Assumed HD was the same .The 4 speep shifter has indicator on it showing gear locations