There is a pier extension you can get from Losmandy but as for home grown stuff, I've just gone through the process and fortunately a good friend is very handy with a welder.
I had a local engineering company look for an aluminium pipe the right diameter....no go...then looked for steel....still no go. There is a steel pipe with an outer diameter the same as the inner diameter of the losmandy pier. So in the end Adrian (my welder) got the pipe and a length 100mm wide bar and bent it around the pipe and welded that on. Looks great.
Here's the losmandy link. The Meade tripod adapters could be adapted
http://www.losmandy.com/access.html