Remember now, there is no need to "suppose". It's already been done by Tornado and a couple of chassis' (one being mine) by GTForte are completed as well.
To me, no. Yes, it will produce some power in a more efficient way but it's still a Ford engine doing it just like a modified push rod V8. Granted, it is more technologically advanced in relation to the chassis, but in my case (and probably everyone else's that isn't going for originality) my chassis isn't a stock GT40 one either (CAD design, etc.). Going with that, one might extrapolate that you would be against modern brakes, wheels, and tires since, well, they are "ahead of the chassis" too.
Like you say, it's all taste. To me, I value performance over originality while keeping the "spirit" of the GT40 alive. It's kind of all or nothing, to me, with the originality thing. If I wanted original, then I would buy an 1960's sideoiler stock...no modern cam, heads, etc. Use old style Goodyear tires, and original brakes, etc. etc. The thing would look like an original, and perform like an original, but it wouldn't be one, and would perform far inferior to what a more technologically advanced hybrid would (better engine, tires, brakes, etc.).
To each his own.
