From the CARB website:
http://www.arb.ca.gov/msprog/aftermkt/devices/amquery.php
EO: D-140-26 View PDF
EO Date: 9/15/1992
Manufacturer Name: Spearco Performance Products, Inc.
Device: 375 HP Twin Turbo System
Device Type: Turbocharger System / Turbocharger Modification
EO: D-140-27 View PDF
EO Date: 2/8/1993
Manufacturer Name: Spearco Performance Products, Inc.
Device: 450 HP Twin Turbo System
Device Type: Turbocharger System / Turbocharger Modification
EO: D-321 View PDF
EO Date: 6/28/1993
Manufacturer Name: Design Development & Manufacture (DDMI)
Device: Twin Turbo System
Device Type: Turbocharger System / Turbocharger Modification
EO: D-469 View PDF
EO Date: 12/1/1998
Manufacturer Name: Incon Systems, Inc.
Device: 300, 375, & 450 HP Twin Turbo Systems
Device Type: Turbocharger System / Turbocharger Modification
The only one I've heard of is Incon but they are discontinued, us CA stang owners are outta luck...
