Update:
I went to look at the car and met The salesman (Michael Roa).(unannounced) He told me the car was down the street in a shop for an
oil leak. We drove over there and the shop owner never showed up to let us in. (hey, it's Christmas eve. I'll give him a pass) I asked why the engine is advertized as a "427 Cobra Jet". He said he does not have much experience with these cars, and that is what the owner told him. So the long and short of it is we will not know until someone looks at it first hand. I'll try again Friday.
Steve