At the request of r3laxedU, here is a double vertical piston extender that is 1 wide. I think I followed what he needed pretty well as this was his original picture. Let me know what you think or if you find this useful!

The source image with his request.
http://img5.fotos-hochladen.net/uploads/20120710220wy4dx6z297.png

Tried uploading this a moment ago, but my video was still processing haha. Fixed and re-uploaded