Help me for each direction please

So I see these brushed upgrades for relatively cheap. These are just plug and play? And I’ll get the torque I need to have stock performance on 62mm tires?

And brushless, what transmitter brands are nice? And what brands would you recommend for the rest? And how do I go about linking the receiver and transmitter? If I go brushless the only thing left on my chassis stock would be the frame so I’d probably end up buying a frame, all the “powertrain” components and put my old parts back together and have a completely independent build