Converting a 15lb beastly truggzilla to brushless.

[Kiwi]

I know that there won't be a fuel tank and I expect to remove the rx box, but isn't there a big motor available, maybe even a brushed?

Will I be able to cut out the throttle servo? Can the ESC apply brakes using the motor's magnetic field?

IMO there is no such thing as overkill as long as it can be made to fit on the chassis and mesh with spur.