The park has another Type 6, E93, which I haven't had the chance to take a photo of yet since it normally is in Sandy Hook. It's a pick-up truck with a slip on. It's slated for replacement this year.
Gateway also has two structural engines, Type 1's I believe, at Sandy Hook, as well as a support truck. Next time I'm down that way, I'll try to get some photos of those as well.