Anyone mounted an Intes etc to a Nexstar 8 ?

I often see Intes OTAs only for sale, and wonder what would be a good mounting. I don't often see N8 mounts only for sale, but nonetheless have thought that with one of those adapter bars (ray's) you could mount something better than the n8 tube on that mount. Maybe it would be undermounting for a 7" intes? Maybe the n8 tube is just dandy as is. But I'm curious...what is the biggest and/or best thing you've seen mounted to a N8 modified with an adapter?