The WS-6 option started in 1978......so I'd say that's going to be hard to nail down.
339 Convertible WS6 Trans Ams were made in 1998. All WS6's have ram air.
2,827
according to thepontiactransampage.com there were 1250 made in 2000
12,212 WS-6's were made.
There are many places one can list a Trans AM WS6 for sale. Some places one can sell a Trans AM WS6 include eBay, Craig's List, Camaro Zone, and Auto Trader.
the ws6 ram air performance package became available in April 1996 on the formula and trans am .
Not in the literal sense, but you could configure a base Trans Am with the same features and options as a WS6 model if you were so inclined.
I own 1 2002 and 1 2001 trans am ws6, both have a 3.42 rear end ratio, that was the standard gear for the ws6 from the factory. The collector edition ws6 had a option for a slightly lower gear.
305
The 97 Trans Am does 285 hp, Ram Air (WS6) models had 305 hp
There were 30,690 Firebirds produced in 2002 of that number 14,608, almost half, were Trans AM WS6. Although the total production numbers were low because half were WS6 that makes them the least collectible of the bunch.
3.42