I apologize if this is a repost, but I have checked the search and there wasn't any answers to this question. So here it goes; what is the correct lower intake manifold gasket part # for stock heads and Edelbrock Performer 5.0 lower intake? Question #2 Is FelPro 1262 gasket fit to be used on the street with reasonable amount of miles before it starts leaking? Thanks for any replies.