Are you sure you want a stem that tall? Those stems are usually used by people looking for a very upright seating positions. That thing is probably going to be extending about 10-15cm up out of your headtube.
I would probably look for a stem with a more normal quill lenght unless you want to be sitting straight up.
I love me some technomic stem. Lots of extension can give you a great, very comfortable riding position.
Back to the orginal topic, I had a frame that took that size. Looked all over the place for a cheap stem to put in it. Finally gave up and dumped the frame. It wasn't very good anyway. This hasn't been too helpful, though.
I sanded down a 22.2 diameter Cinelli stem to fit into the 22.1 steering tube of a beautiful chrome Peugeot fork. International cooperation at its finest! It took me about 20 minutes, I think, with 60 grit sandpaper. Remember to change the sandpaper a lot -- it gets clogged very fast, and then you're just wasting effort.