As some know US EPA has gone after companies selling Emissions Delete parts/kits.

Some States have gone after Owners of vehicles now...
Example: NJ has ordered return to stock or destroying a Ram truck w/ Deleted Emission.
https://www.youtube.com/watch?v=6QFzNgpxRT0 @ ~ 2:00 mark
https://www.thedrive.com/ne...eleted-emissions-fix

Anyone listing a vehicle sale in NJ on FB CL etc and mention Deleted Emissions is likely to have same problem.
This likely can include Very Old Cars w/ Deleted Cat's, EGR and other items. Maybe affect cars sold w/ Antique and other Special Tags because the "rules" to have them often requires all Emissions Equipment intact and working even tho those Tags don't require E-testing..

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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

Florida was doing the same, I don't know if they are still as strict but if you were caught with illegal modifications they would take and crush your car.
Mostly to make a point with the street racers.