Straight from the brochures, all manual:
German 1993: NSX : 3020lbs = 1370kg
USA 1995: NSX : 3047lbs = 1382kg
USA 1995: NSX-T: 3142lbs = 1425kg
USA 2000: NSX : 3069lbs = 1392kg
USA 2000: NSX-T: 3164lbs = 1435kg
USA 2002: NSX-T: 3153lbs = 1430kg
I'm sorry, I don't have any numbers for the 2002 NSX Coupe. But actually, by the numbers, the 2002 NSX-T is 11 lbs lighter than the 2000 model.