I've been cruzin three tc3's for yours all over geared and high kv brushless also and never melted a diff.
lock the rear diff and have the front working smooth and not too tight but not lose.
put the battery in the middle position run the smallest pinion (19t or 20t).
19turn motors are the choice of all my drifter friends but it could be to low of turn for the application. but it would work good.
i use stiff copper springes in the rear and silvers in the front. this is also a good grip racing setup as well.
if your running a brush motor keep the motor wires as short as possible for less resistance.
keep your ride high about 7mm off the ground remember this is not a race car its a drifter!
hope this helpssss.