First I'll admit that I'm not an old timer by any means, nor am I that young anymore either. But I do know car quite well and can tell most custom mods that have been done to an old car. (Some are very inconspicuous ). When customizing really got rolling in the 50's, I suspect most anybody could tell a car was customized.....different grille, rounded hood corners, peaked etc. Because the factory equivalent car was next to it on the street. Without being able to compare a factory car to a custom, I suspect most of the amazing build and talent is lost on alot of people now....especially younger crowd. I know there are some that will know what's been done, but for most I suspect they'll just say it looks cool.