Planet Haze:
PhDHEGonG Turbo High Efficiency GonG for Arizer Air, AirII, Solo and SoloII
Once you get to their page they have multiple options, which never seem to be in stock. Unfortunately. Thinking about it, what you're looking for is a glass log stem (sans screen, you could use a cup screen). Epic's stems won't fit, I checked.
I am lucky enough to own a short bowl Turbo GonG, it's kinda nice with 1 small de-stemmed bud stuffed in and no screen.
Edit
Opps. I've dremeled out several short Solo stems for Terra glass stems. You just have to clean and then flush the bejesus out of the piece.