I have a clean '98 Z28 hardtop M6 that has almost 82k miles, medium green metallic paint, great condition. Only mods are an SLP lid and an anti-theft ignition cut, plus I have Lakewood LCA and an aluminum PHB I can put on it for ya. It runs great, and averaged almost 28mpg on a trip today. It has power cloth seats and a Monsoon stereo. AC blows cold, it drives straight (steering wheel is slightly cocked, so it needs an alignment), and it is the quietest F-body I have been in since driving a brand new one. I would sell it for $9,300 and am not too far away in DFW. There are not many '98's left that are this clean. The interior is awesome, and it is a tight car.
That said, I would buy Mike Johnsons car if I were you