I can get a 13t pinion but 12 will cause motor to be cocked.
I can add a spacer under diff mount I mean tooth mesh doesn't take much to get right or mess up.
An axial yeti xl uses a 2200kv motor and it's huge with a 13lb weight with 5th scale wheels
I know the transmission is different with a 80 spur and 12t pinion could be wrong but 50mph gearing can't be far from me with my diffs being different
After 25 minutes 3.71 on the cells and 171° isn't bad