Well you need to check the complete list here... as you can tell there is almost no information on the Mark VIII most ending in 1996...
http://www.arb.ca.gov/msprog/aftermkt/devices/aftermktdevice.php
A few examples below...not a comprehensive list.
When speaking to these manufacturers, I specifically asked them, "...your unit will be CA legal in my 96 Lincoln Mark VIII?" They both responded with an adamant YES. KB is located in Cali, so they would definitely know.
I can tell you though that the list on that site is not complete. I know of some other units that are not on that list.
Manufacturer Name: Kenne Bell, Inc.
Device: TS-1000 Series Supercharger
Device Type: Supercharger System / Supercharger Modification
Part_Number: Model_Specification: Modification_Allowed: Remarks:
1992-1996 Lincolns with a 4.6L engine 1992-1996 Ford Thunderbirds with a 4.6L engine 1992-1995 Ford Crown Victorias with a 4.6L engine 1996 Ford Mustang with a 4.6L engine 1991-1995 Ford Explorers with a 4.0L engine 1991-1995 Ford Rangers with a 4.0L engine 1995-1996 Ford E & F Series Trucks with a 5.0L, 5.8L or 7.5L engine 1997 Ford F Series Trucks with a 4.6L engine System includes Twin Screw supercharger with 3" diameter pulley, intake manifold, fuel management booster, and a new computer chip.
Manufacturer Name: Kenne Bell, Inc.
Device: TS Series Supercharger, 6 & 8 psi.
Device Type: Supercharger System / Supercharger Modification
Part_Number: Model_Specification: Modification_Allowed: Remarks:
TS1000 Series, Ford 4.6L engines 1994-99 Mustang GT, 1996-98 Mustang Cobra, 1992-96 Lincoln, T-Bird, Crown Victoria Kit includes a twin screw supercharger, new intake manifold, computer chip, and a fuel management unit. 6 psi. kit use a 3" diameter supercharger pulley. 8 psi. kit use a 2.625" diameter supercharger pulley.
Manufacturer Name: Vortech Engineering, Inc.
Device: 5 & 8 PSI S Trim V-1 Gearcharger System
Device Type: Supercharger System / Supercharger Modification
4FN218-010S 4FN218-018S 1996 Ford Thunderbird/ Lincoln 4.6L May require installation of Vortech fuel management system on the fuel return line, & supplemental fuel pump, and modifications made to the intake air ducting.
4FN218-010S 1996-1998 FORD T-BIRD / LINCOLN VIII 4.6L. Engine families that are certified to a TLEV or LEV emission standards are excluded from this Executive Order See NOTE: Installation Pulley dia. (Inches): Crankshaft 6.50 (Stock), Input 3.60