My opinion of the unfinished aluminum Kirkhams is well known. They take lots more care than they are worth and eventually every one I've seen looks like it was just driven in a unpaved hill climb. If your purpose in getting a car is to forever take care of fingerprinted aluminum instead of driving the car, fine, otherwise get it painted. All of the originals were. If you get a painted Kirkham you'll spend more than getting a Shelby CSX of the same car. You'll still be left with plenty of tinkering to do as the nuts and bolts underneath the skin seem to reproduce and their babies fall on the garage floor.
And unless you like cleaning up
oil, pass on the FE. (Don't bother trying to fix the leak, they all do, and you'll get into the OCD trap trying.)