bushless motor has so much more initial torque. your shaft drive car would become a very good drifter like my tt-01. it's quite hard to get enough traction and speed with the shaft drive these days. I read a guy's post that even his TC4 could go not any faster in a straight, no matter what motor batteries he throw in it.
10.5 bushless is the most I would go for it. I like the novak motors, very strong pull even with weak batteries. great run time and fun too
TA05MS, F201, F103GT, RS4 Mini, TopForce (original), Mini Inferno, **Tamiya BMT 931 K4** "I am a new soul, welcome to the new world, so proud to joint the TEAM MORON. lalalala" We love Onions products, so touching. COL - cry out loud