If you mean the T-GT2, yes that works. However, I personally recommend the T-LCM. The extra price is worth it. I also had the T3PM first.

Of course, this is Thrustmaster

Yes, normally TP3M pedals connect to a T.RJ12 port which is compatible with Thrustmaster steering wheels.

If the steering wheel is not a Thrustmaster you can buy a TRJ12 USB adapter. Thrustmaster T.RJ12 (PC)

But I agree with the previous comment, it's better to get the T-LCM because you have a top-of-the-range steering wheel. It will be a shame.

I use the T300 Servo Base.
Go to: https://www.thrustmaster.com/products...
and use the compatibility checker. Usually it should work with all T-series but better check it by yourself.

Sorry, I have no idea. It's a gift. I don't use it.