Hardened Steel Pinions?

very good info... comming from the world of 1/8 nitro and never having an issue with spurs or clutch bells i was inclined to go with an all steel setup... now i will wait for the sliperential and use the ofna plastic gear and figure out a better way of mounting the motors... anyone though of drilling and tapping the rear endbells of motors to have another point to mount the motor to the chassis... ?