You can hook up the steering and pedals pretty easy. (ForceFeedback is a lot more work and since mame doesn't do FF, I don't know much about this; IIRC people have done it though.)
Your game used 270 steering wheel, right? Then just get an
apac or other analog interface (look at flightsim & driversim sites for a dozen other ones), or even hack a gamepad (search here for more info on specific GPs).
edit spelling