There are numerous options. From kill switches, column guards, unplugging the ECM power plug by the battery etc….
Check out GNTTYPE.org
You could have a RAVELCO system installed, or there’s the poor mans pass key set-up.
Turbo Regal Performance Recipes
www.gnttype.org
Resources for Turbo Regal Enthusiasts.
gnttype.org
In 2022 there are also cheapish tracking options. Air tags, hiding a cheap cell phone with GPS, GPS trackers with fences.
You have a lot of options you have to choose what works for you.