Since you brought this up, I would like to pose an interesting question. What happens when a Lancer tries to be an Evolution? Or when a GT-T tries or converts to look like a GT-R? Or a GT-R with a V-Spec II Nur badge when it clearly is not? Are they shunned the same way?
There are just too many around and when it is brought up, many get upset. *laughs*
In all honesty, It all depends on individual. One can convert the car as what you have suggested. The look of the car may deceive other ppl. Maybe the performance may be matched with some up grades. However, the fact is still a fact which cannot be bent or changed. Only the modder owner knows it.
Maybe or maybe not this is relevant. Why people are so crazy about the real-deal ori GT40? esp the ones with matching no. parts? Why ppl willing to pay millions of pound for such ori car? perhaps its the REAL car reason, maybe its the REAL herritage its associated with. The "realness" is what gives the owner "I-feel-good, and lucky, special etc"
On the other hand, there are ppl who make and sell GT40 replica like in Brazil. And there is still buyers out there. Either way, The real "ownership feel" just isn't there if one buys a replica or a wannabe-modded car.
Just my 0.2 kupang worth...