I want to build a mild 455 comp xe284 cam. Is it worth it to get edelbrock heads or will some good c heads make as much power ? 400-450 hp would be fine with me was thinking 900 cfm Holley,torqer or a edelbrock dual plane intake and the comp cam. C heads have 80cc chambers. Not sure about edelbrock. Was shooting for 10:1 compression. Also will stock pushrod length work with the comp xe284 cam