Actually, all of the individual parts of the ABS/ALB are (or at least were) available
B-24-10 ABS Modulator (LH) (-'99) NSX
01 46175-671-651 5.0 SCREW, SOCKET
02 46472-568-000 1.0 PACKING, OIL BOLT
03 46669-692-003 1.0 SEAL, RESERVE TANK
04 57110-SL0-L01 1.0 MODULATOR ASSY.
05 57115-SL0-J02 1.0 BRACKET, MODULATOR
06 57116-SP0-305 2.0 HEAD SET A, MODULATOR
07 57118-SG0-801 4.0 O-RING, HEAD
08 57119-SL0-L00 1.0 GUARD, MODULATOR
09 57119-SL0-003 1.0 MARK, RESERVE TANK (ABS)
10 57120-SL0-013 2.0 PISTON COMP.
11 57121-SG0-801 2.0 SPRING, FR. MODULATOR
12 57141-SF1-801 2.0 SPRING, RR. MODULATOR
13 57174-SL0-A00 1.0 BRACKET, COUPLER
14 57181-SL0-951 1.0 HEAD COMP., SOLENOID (A)
15 57184-SL0-951 1.0 HEAD, SOLENOID (B)
16 57186-SL0-013 2.0 PLATE SET, SOLENOID
17 57188-SB0-801 1.0 JOINT, PUMP
18 57189-SL0-003 2.0 O-RING (P25.5)
19 57191-SL0-A01 1.0 TANK COMP., RESERVE
20 57193-SL0-003 1.0 FILTER, TANK
21 57196-SK7-003 1.0 CAP COMP., RESERVE TANK
22 57200-SL0-003 1.0 SOLENOID SET A, ABS
23 57204-SP0-003 4.0 O-RING C, SOLENOID
24 57250-SL0-003 1.0 SOLENOID SET B, ABS
25 57341-SL0-003 1.0 O-RING (P3)
26 57345-SL0-003 1.0 VALVE ASSY., RELIEF
27 90170-SL0-000 3.0 BOLT, FLANGE, 10X50
28 90673-SK7-A01 2.0 BAND, HARNESS
29 93403-0601605 1.0 BOLT-WASHER, 6X16
30 95701-0601605 4.0 BOLT, FLANGE, 6X16
31 95701-0601808 4.0 BOLT, FLANGE, 6X18
32 95701-0802005 3.0 BOLT, FLANGE, 8X20
33 95701-0803208 4.0 BOLT, FLANGE, 8X32
34 95701-1003208 2.0 BOLT, FLANGE, 10X32
35 57140-SL0-901 2.0 PISTON COMP., RR.