Unfortunately, the 1994 brochure is still missing from my collection (';(')
Listed weights I have (US-specs):
1991 NSX, 5-speed coupe : 3010 lbs
1995 NSX, 5-speed coupe : 3047 lbs
1995 NSX-T, 5-speed targa: 3142 lbs
1997 NSX, 6-speed coupe : 3069 lbs
1997 NSX-T, 6-speed targa: 3164 lbs