You do not offend anybody! You are in very respected company. Originality is still king. However with cars like the 240Z (and 911, and 2002, and GTV) they are purchased not just to have a beautiful object to own, but the very roots of their pedigree are in motorsports and the ability to produce a thrilling drive. These cars attract those who want to capture that original 240Z magic as well as those looking for the ultimate classic car driving experience. A well modified classic version of the cars mentioned above heightens the driving experience. If the mods are tasteful and period correct, I have been posing to the classic car crowd, that these cars modified to drive are worth almost as much as all original ones. People who value the visceral drive over all out originality come with bags of money of their own. Both are welcome at my house!