The reason I asked the original question about 'originality' was simply because the I have heard the claim made that such and such an aircraft 'flew in the battle of Britain' and I was curious to know whether this actually meant anything. Or whether someone had just built a new aircraft round the data plate.
I certainly wasn't suggesting there is anything inferior about using new parts. If anything a new replica that can be flown the way the designers intended gives a better impression of the true nature of the aircraft than a 'genuine' one that has to be nursed in respect to it's age.