I have a few intake manifold questions... Is there a particular intake manifold that was used on 1980 Z28's, or did Chevy use different ones? I am asking because I have an aluminum spreadbore intake my brother gave to me, and I'm not sure if it's what would have originally came on my car (1980 Z). The casting number is 14057053. I researched the cast number and it showed it was used on 78-85 camaros, and a few other vehicles. What Camaros would this have actually came on? How do I know what type of intake was used on my car? I have the factory build sheet, and don't see anything indicating what type of intake came on it. Also, if it was used on the 80 Z's is it worth a damn to use, or of any value? Right now I do not plan to use it because I'm fond of my Edelbrock Performer intake, but if it's something that possibly came on my car, then I'll store it with some of the other original parts I have for the car. Any insight?