Originally Posted by terry.sc

If that's the 3Racing ball pivot mounts then it's unlikely to have enough clearance around the pivots.

If you are using a full size lipo in there you will find the battery holders won't fit on the ends. A standard lipo just goes through the standard battery mounts and is wedged in pretty tight. For mine, one strip of fibreglass tape to stop it sliding out does the job of holding it in place.