Do the spring LMAs have two versions in the NSX? In one shop I saw that 91-99 and 00+ are different.

Just a little bit confused. The US parts catalog says:
14820-PCB-003 does fit your 2000 but not 14820-PCB-305
and
14820-PCB-305 does NOT fit your 2000 but 14820-PCB-003 DOES.