I got my 1978 CB400F2 in May this year, she was in a bit of a bad way, but lots of work and new parts are bringing this ongoing restoration results, she gets a lot of attention now, predictably enough mostly from older people. I've kept her to standard the best I can, the exhaust system is something non original but outwardly identical unless you look down the hole. Rear shocks are non standard but replaced really saggy originals well. Pattern parts abound but if they mimic the originals well, so what?