Anyway, let me see a picture of the tranny mount you have in your parts bin.
I have a set of 16mm racerx but I'm not going to sell them :):).
Castle Neu 1520 on 6S LiPo Powered Gmaxx (Nitro Killer)
Predator with OS .21TM
Supermaxx with Mach .26
Revo with OS .18TZ
Kyosho ST-RR Conversion
Ofna CR with Tekin ESC/Motor (2)