Trust me, there is a big difference between the two. There is far too much play, especially for a brushless conversion Look at the pictures below that I have just taken, the first shows 1/8 and 1/10 dog bones together and the other two show them inside the drive cup on the centre diff.
My Rides:
Tamiya Dark Impact - Team Losi Micro B - Cen Mini Madness - Soon to be BL Xray XB8 TQ