Scott,
Considering what you have, serial #, parts, components, condition, and some other engine items freshened up, and the overall perceived "newness or condition" about the car, its definitely not on the low end side of ERA sales; regardless of economy. These are low-volume production cars, and if the right buyer comes along looking for an ERA, in Red/White, with a real 427 in it, you can probably expect to get a tad more for it than mid to high 40s.
Knowing what it takes to duplicate it and in comparison to other cars out there right now, if it's at least a 9 on a scale of 1-10, I would ask more like $56K and not take a penny less than $52K for it. I see what you have on the car. Once a buyer sees the actual cost of what it takes to build one new, yours will seem like a good deal as long as it's super clean without a lot of chips or signs of hard use or abuse.
Of course, there is always a low-baller who can offer less and get cars for less, but the other half of that equation is how bad the seller needs to sell the car, and how long they can wait for the right buyer to come along with the few extra bucks willing to pay for the car because it's what they really want.
It all comes down to what someone is looking for and what is available on the used market at that time, and how bad they want a Red/White ERA with a 427 in it
This is the former Napa car, right? If so, I may know of the car. Neat car by the way.
Good Luck. DC