To go with the 1967 Indy 500 cars, I have tried to make a control tower which more closely resembles the one used from around 1956 to 1998. This is for the converted N3 IMS track, which depicts the (then unfinished) current pagoda as it was in 1999.
http://members.home.net/charles.mark/tower.jpg
It works with my Voodoo card, I don't know about Geforce cards.
ims_towr.zip
