Dustin is correct.

The Talon Buggy uses the .66 universals, whereas the Premier 4, MT2, Magnum NX all use the .88 universals.

You can also use the universals in the rear of the car to get rid of the dogbones if you like. Not a real huge performance gain in changing in the rear dogbones out to universals, but I like to have universals front and rear of a car.