Paul...welcome to the website and congrats on the purchase.
"Wolf-Packs" are basically high-profile, selective speed enforcement details and were pretty popular back in the day. I did see one last summer in S. FL, but they weren't doing them very much when I still lived in the state. Someone who currently lives there may be able to provide further info.
Many times, an FHP plane was utilized, and the troopers would line their cars up on the side of the highway and pull out to stop whatever vehicle(s) were called in. I've heard of units using stationary radar also being used this way.
If the guy selling the car is an actual retired trooper, I'd hate to have seen any of his incident reports.
As for the claim of it being a "wolf-pack car", I wouldn't place a ton of merit on it. These were pretty informal deals and definitely not full-time jobs. Any number of cars could have participated in that type of enforcement activity. Here is the FHP policy on Selective Enforcement, issued in 1996, mentioning "wolfpack patrols".
http://docs.google.com/viewer?a=v&q=...UoIi4ejzTELf6g