CARRIER BEARING ASSEMBLY
 
This bearing assembly has what you need.  Made of 7075 aluminum and packed with a hardend steel shaft (with D-shapped ends to keep the slop out).  Shaft is 5mm shorter than the stock transmision shaft that most othrers use, which allows for more room to make your drive shafts work.  It comes in from the rear to make room for whatever links you are running.  Anodized in red it comes with a 2-D milled carbon fiber arm and a black 7075 aluminum frame spacer.