High coaster and park ratings?

I was surprised to see I could get an excitement rating for one of my coasters over 10.00 - it's at 10.09. What's the highest that can go? It seems easy to get intensity and nausea that high, but not excitement.

Also, has anyone gotten to 1,000 as a park rating?

My Magic Magic Mountain Beast coaster has an excitement rating of 10.34, but, it took forever to alter it, so that the intensity rating round drop out of the red. I brought the intensity down to 9.89. It's over 8,000 feet long, and has 2 lifts, and 23 drops. I bulldozed the Gold Rusher mine train to build it. Two of the biggest drops are Thunderbolt style dropping 125 feet down over loggers run. I have 2 similar coasters at my other Magic Mountain parks but, this one is the best.

I also have a version of Shivering Timbers in one of my Magic Mountain parks, it has an excitement rating of 10.4, and is filled with tunnels. I built it behind Psyclone, going along the backside of the park in the hills, the only place in the park where it would fit.