Not if he hangs on Club Cobra and learns about what to look for!
A 427 is one thing, 428 are more common. A 427 SIDE OILER is the 'holy grail', difficult to identify and hard to find.
Usually found only in the 'up-scale' replicas, such as Kirkham, ERA, etc. THESE cars generally sell for more than $40K.
And why would you want a 9" rear? OK, maybe because it's stronger than a 8.8? A side oiler will generally come in a car more 'period correct' than the average replica and will almost certainly have Independant Rear Suspension (IRS). Which, in my opinion, is far better than a live axle, and certainly more correct.