Sorry to hear that you're sick. That always sucks. With only 22k mile on that car I still say fix it and drive it. It probably will need some work from sitting for all those years but all of the "hard" parts (engine, transmission, suspension, differential) should last a while. G Bodies ride and drive pretty good. So much smoother than the Corolla.
Technically the Corolla would run if you put a starter and a radiator on it but if you wanna drive it you're gonna have to put on a spindle, rotors, brake pads, headlights, parking lights and a hood. It'd be easier and cheaper to fix the brakes on the Regal.
Oh, I apologize for hijacking your thread with our nonsense. If you want us to stop, just say so.