4.9L switch assembly [E1TZ-12A182-B] - NOS

Early California feedback models?

https://www.ebay.com/itm/Motorcraft-SW-1718-Distributor-Modulator-Valve-Switch-1981-1982-Ford-4-9L-CALI/184110162195?hash=item2addd22113:g:V6AAAOSwbI9eDndx

Fits these calibrations:

CALIBRATION PARTS LIST NO. 136
(Calibration No. 1-51S-R10)-6 Cyl. 300 C.I.D. (4.9L)
1981 F100/150 - - 2/W/D—M/T—Calif

CALIBRATION PARTS LIST NO. 181
(Calibration No. 2-51T-R0)-6 Cyi. 300 C.I.D. (4.9L)
1982 E100/ 150 - - M/T—Calif

CALIBRATION PARTS LIST NO. 188
(Calibration No. 2-52S-R0J-6 Cyl. 300 C.i.D. (4.9L)
1982 F100 - - C6—Calif.
1982 F150 - - 2/W/D—C6—Calif.
1982 F250 - - 2/W/D—A/T—U/8500 lb G.V.W.-Calif

CALIBRATION PARTS LIST NO. 189
(Calibration No. 2-52T-R0)-6 Cyl, 300 C.I.D. (4.9L)
1982 E100/250 - - A/T-Calif