Brake booster: NA1 vs NA2

[bruckner]

Anybody knows the difference between the NA1 and NA2 brake boosters? I see different numbers for 91-96 and 97-05 (cutoff is not 2000 so I assume ABS is not part of the equation).

NA1 booster: [h=2]46400SL0951[/h]NA2 booster: [h=2]46400SL0J02[/h]

 

[solidol]

97 has larger brake discs, wondering if pressure has been adjusted at the booster

 

[Honcho]

Kaz would know. My understanding is only the NSX-R had a different pressure booster.

 

[goldNSX]

The brake master changed in 97+ to create more pressure.