Well I found another reason to run $OE because it has direct connection to PCM from VSS and no DRAC/VSSB buffer. But now what VSS to buy?

Four choices from Jags That run for aftermarket in speedo line VSS. Can rule out number 4, I think 1 and 2 are for DRAC/VSSB? That leaves 3?

There are 4 types of VSS signals required by the ECM:

1. The two-pulse (2000 pulses per mile) square wave (D.C current or direct current) used on all TBI engines thru 1992, all computer-controlled-carbureted engines, and on 1985-1989 TPI engines.

2. A four-pulse (4000 pulses per mile) sine-wave (A.C. current or alternating current) signal isr equired by the 1990-1993 TPI, 1992-1993 LT1 engines, and 1990-1993 Camaro 3.1/3.4 V6 engines.

3. A 40 pulse per driveshaft revolution speed sensor used on 1993 and newer trucks with automatic -transmission, 1994 and newer rear drive cars with the automatic transmission.

4. A 17 tooth per driveshaft revolution speed sensor used on 1993-1997 LT1 engines with the Borg-Warner 6-speed transmission. An 11 tooth reluctor ring is used on 1993 LT1 engines with the Borg-Warner wide ratio (3.35 First gear) 6-speed transmission.