Maybe I read all this wrong, but I can't find anywhere where all this "stuff" needs to work. When I converted my 40 Chevy from Altered to Gas Coupe in 1978 the rule book stated the same as does now. I needed to find a 1940 horn and attach it behind the grillle and search out a pair of fender mounted parking lights to make sure I met the rules for the class but I didn't make anything work. I had to add a front bumper and running boards too. Faked the bumper mounting brackets cause I couldn't find any but as for working I've looked at the latest rule book on pages 68, 69, 73-77 and only that you need them and they be the same year as the car.................................but I could be wrong...........JD