[markjohnson]

Those Hooker #2457's are 2.00 inch primaries, which is a great size for a big block. As long as you make the very small investment in the proper frame mounts, you won't have to take a hammer anywhere near those nice new headers. Spark plug clearance is great and you they are a very easy install without having to lift the motor to put them in place. Great header, great price, easy install. You're all set.