I found a copy of Forza Motorsport 2 recently and pulled out my Xbox 360 just to play a game with the MR-S in it. It was a ton of fun.

 

I used to love this game! I had the Sw20 back then. Is there a PC emulator for 360?

 

You have Xenia which should be able to run Forza 2, but things are changing fast and not sure it is very stable.
You could also try to find a second hand Xbox 360.
It is fun to revisit these games! During lock down I bought an old PS2 and re-played a lot of old games (including GT4).
Currently I really enjoy driving the SW20 in GT7 with my PS VR2.