They will work with decent but if they aren't free then I wouldn't want to put money in them sice you can get E-7's for free usually from other mustang guy port those and then have a better head then the early 302 and retain you smog holes. If you want the extra compression You can go with the E-6 heads from an 86 GT and port those out and get the compression from the early trrype head but better flow then the early head.
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A good plan, violently executed now, is better than a perfect plan next week.
George S. Patton, General (1885-1945)
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