Well I don't know what to tell you about the seller not having PayPal. I don't see that as a problem or sign of a scam though. Some people just don't like PayPal.
I don't see a different facia. That's a 1999 front facia on that Cobra. As for the emblem... all Cobra's come from the factory with the standard Mustang pony in the grill. Most Cobra owners switch it out for a snake. As for the doughnut spare on the front... that's not really what it is. It's very evident that this car has been to the track because what you are seeing are a set of Weld Prostar racing wheels a.k.a. skinnies.
I don't see anything wrong with that auction and it appears to be a legit '99 Cobra set up for drag racing.
U.M.