well I know this is a dead thread of sorts, but I am new to the forum and contemplating this exact install.....I have a little different take on it...IMHO, the Kirkham is the finest body / chassis / suspension package in Cobra land.....I think coupling that with a Ford engine, which is truly groundbreaking in terms of power, weight, reliability, economy and emissions is really not such a bad way to go. I think it is in some ways similar to my Ford GT.....great looking body, not exactly what raced at Le Mans, but a wonderful modern rendition of that famous racer, with a modern powerplant. I see a Coyote powered Kirkham in a very similar light! Will it have the re-sale of a 427 car? Maybe not....It is certainly NOT a substitute for that. But, it might just add a larger audience, or persuade people to use their cars more! A 427 is special, but it is a lot of other things too.....i think for many people, this would be a much more practical, and many times, enjoyable car. Ever notice how many low low miles FE powered Cobras, even Kirkhams, are floating around? Again, they are different animals, but a Coyote powered Kirkham might be a very very good package for many enthusiasts who want something a bit less raw
My two cents!