I think my battery tray will work. heres a pic.
I think i will get a 11t and 12t pinion just to be safe.
Notice how when i used the rcm crt motor mount how close the screws were to falling through the holes with a 14t pinion, thats the reason I went with a revo motor mount that i allready had. now im concerned that the screws wil be too close to the other end of the mount. LOL