Essentially, it's highly improbable to find a passenger car model from 1986 onwards with a four-barrel carburetor. By that time, fuel injection was the dominant technology for passenger cars, even in high-performance models.
For trucks, the possibility is slightly higher, but still low. You'd have to delve into very specific model years and trim levels of heavy-duty trucks from manufacturers like Ford, Chevrolet, or Dodge (Ram). Even then, you'd likely be talking about very limited production runs and possibly aftermarket modifications.
To find any such vehicles, you would need to:
* Search for specific heavy-duty truck models from that era: Focus on trucks with large displacement V8 engines.
* Check original brochures and specifications: This is your best chance to verify carburetor type.
* Look for information on specialized truck enthusiast forums: People who restore or modify older trucks might have this information.
In short, while not completely impossible, finding a car or even most trucks with a 4-barrel carburetor from 1986 onwards is extremely unlikely.