The Spektrum servo is the 590. It should have plenty of torque for the MT2. Im using MG995 servos I got online. Theyre not the greatest servos in the world but for the price you cant beat the torque. Ive been running them for a while and so far they work great.
You can adjust the end points for the steering depending on the radio you are using. You might have to adjust the tie rods and set them off center if you cant get the amount of steering you want in both directions.
I got the TZ out for a good run on Saturday. Unfortunately I wasnt able to get any video. Im going to put the two speed back in the truck this week and see how it runs.
Eminent, did you get the 2 speed in yours yet?