Hey there, welcome to the forum!

Are these drill motors brushed (so the motor only has positive and negative wires for them) or brushless (so the motor has three wires coming out of them)? As mentioned, if you can get a hold of some TZ85As (https://hobbyking.com/en_us/turnigy-...w-5a-sbec.html), they are the ones to get at the moment.