James did you get your answers?
I am based out of KGYY, currently there is 1 B737-400 sitting derelict on a ramp area, in my guess the ramps there could easily park 8-10 B737's with ease, probably up to 20 if the jet center could get their act together when towing them!
Try also Will the owner of Garyjetcenter.com or Ben the manager, they are the ones with the tugs and fuel trucks on this airport. Apart from the suburb Gary a couple of miles to the south which is a sad blight on the landscape this is a great airport, its a 25 minute drive to the city center in traffic, with very little air traffic, and easy to access from the west coast and south, coming from the east of North they have to take you down low for the last 100 miles, so expect some scenic flying at 4-6000ft for the last bit as you come under the ORD and MDW traffic.
But every airline that starts there dies very very quickly, sadly, nice terminal too.