Why do you say Kyosho? Looks like the original 6-gear transmission to me, dyed black. The suspension arms look like the the ones made by Andy's. The rear wheels and pyramid spikes are AE and came standard on the RC-10 Graphite.
Just pulled the trigger on a brand new Neo Scorcher with Futaba 3PKA for $125 on the `bay. Seemed like a good deal. This will join my old Hornet and Thundershot from the 80's, which my boys drive now.
It will be my first build in 20 years!