Are the factory 70 Z28 spoiler and fender emblems the same size? I ask because I am about to buy these emblems. Classic Headquarters has the fender emblems with 3M double sided tape which is what I want so I don't have to drill holes. But they don't have the spoiler emblem at all. If they're the same size I'll just buy three of the fender emblems and use one on the spoiler...it's the 3 piece tall spoiler btw.