I used to have a RCT2 custom park I downloaded from the now defunct RCT Competition website. It is called Six Flags Thrill Park. I forget the creator's name, but I am spanning the globe trying to find it again.
If it helps, the park has a duelling woodie coaster called Pup and Dawg, and at the back of the park has some flying coaster themed to ancient Egypt. Also at the back is the Great American Scream Machine, which is basically a twister coaster made to be a mirror ride to Top Thrill Dragster (using trainers no doubt).
If any of you have it I'd really appreciate getting it from you.