[289ACE]

I was able to download the other pics and now see the car has aluminum footboxes. I think the 2.6 cars had black fiberglass versions so I am guessing this is not a 2.6 variant and since there is not a bristol emblem on the trunk its probably an AEX car. As for a value (the original question) its tough to tell without more info like what comes with the car, ie how complete is it. Ace unique parts are more expensive than Cobra parts as there are not as many aftermarket parts available. Pass along the chassis # and a more complete parts listing and I may be able to take a guess at what is fair market for it, as I know of a couple of recent sales that I can compare it against.
Jay