The Atari's works with MadCatz MC2 as well as the Logic3 wheel. It actually works better than with the Logic3 because you can set the deadband directly on the wheel to your liking using the calibrate button. Also, since the pedals and shifter have pre-assigned button functions (L1, L2, ect), you can move the directional and fire buttons directly to the shifter and pedals with the Wellingham adapter. This is nice, because MadCatz MC2's are much easier to come by than the Logic3 TopDrive's. I do like the Logic3's greater heft and stability, though. They both use suction cups, but the Logic3 is practically immovable on a flat surface, while the MC2 is lighter and the cups don't seem to work as well.
Other wheels will also likely work, but they must have standard controller support that allows them to work with all games. The Act Labs RS I have does not work with the Atari's or non-driving PS1/2 games, since it depends on game support (apparently drivers in the game software) to work with the game. On the other hand, the Logic3 and MC2 will work even with non-driving games on the PS1/2.
The Wellingham adapter loses all reprogramming when console power is turned off, but you can save some of the function by using on-wheel programming, if the wheel model has it, and it saves you from having to undo all the programming before redoing for different Atari games, since different racing games use different joystick functions for gas, brake and gear shifts.
I think this is probably the best option to date for an Atari racing wheel, unless someone were to port all the games over to using both paddles for left/right, up/down, fire one/two and build a wheel with these functions re-assignable to pedals and shifter, depending on the game. There may be better PS1/2 racing wheels than the ones I am using that could be applied to the PSX adapter. BTW, there was, of course, the Sega-1000 SH-400
but I have no idea if it works with Atari games and it would not be a very good wheel.
Wellingham PSX/Amiga adapter:
This adapter may work as well, also,
but I have not tried it and it does not have button move programming like the Wellingham. It does have the up and down d-pad functions copied to the R2/L2 buttons, so you can move the up/down functions to the shifter or pedals, since most, if not all PS1/2 wheels that have button moving programming on the wheel do not allow moving directional functions (the Wellingham adapter allows you to reassign all buttons, including directional, though). You would definitely need a wheel model that has typical on-wheel button reprogramming for this adapter, like the Logic3 TopDrive or MC2.