Motor mount construction

Originally posted by Cartwheels
Here is my Hyper 7. With a MBX diff in the foreground. My plan is Feigao 10L , MGM 160 and I be using 4s Lipos.

Is that a plastic spur on the MBX diff and will the diff bolt straight in Cartwheels,
I have a hyper truggy conversion just begging for some amps but I cant find a plasic spur for the spider center.
I have had some bad experince with the metal spurs :o