I'm getting in kind of late on this thread. I was in Estes Park Jul 21-26. The family and I were playing miniture golf one evening at a fun center on Highway 34 along the Big Thompson river on the east side of town, just before you enter the Thompson canyon. As we were playing I saw a nice looking "69 convertible cruise by. The sighting made me miss my "67 at home. Maybe you guys will bump into this guy. It would quite a surprise for him to run into such a group like you're going to have. Have fun and be safe.
BTW There was road construction on Trail Ridge Road up on the tundra when we were there. Hope it doesn't hold you up too much.