Well here is my conversion...
I even have reverse!
I had the one way bearing removed and a sleeve pressed in to make it direct drive which enables reverse.
Took it out for its maiden voyage today and wow

it is so responsive and being able to corner at 30+ mph is a rush
Set up is: 6S w/1512 1800kv 49 /17 gearing
1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S