Red Cone's a blast. In that area there's Montezuma Pass, Webster Pass, and Radical Hill.
None are too hard but can be tricky. I ran Red Cone two years ago stock and didn't have a problem. The final decent is fricken nuts though. All you can see is your hood, and the cliffs out your doors. It's a blast though.
Mike, the K5 could make it for sure, but there are some tight areas. It's either be off camber or drag your pass. side along a boulder.
Jeep Recovery Team, your height might haunt you on this one.
Carl, your ranger would do fine, just don't be affraid to gass it down the hill if you slip.
Troy would have an issue with too much power on the loose rock
Mitch, your dime would just be lacking a lill clearence but that's what skid plates are for.
All the snow should be melted by now, so i'm definatly down for Cone