the 6PH 1.08 would not work very well on your 289.
I would look for 1965 and ealier Mustang 1.08's part # C5ZF- followed by a letter.
Or, you could look for a Hipo 1.12 that was made for the 289. These are very expensive though.
Ed Jenkins
Ford Galaxie Club of America member #3350
1966 Galaxie 500 Convertible built in Chicago Illinois, will have a HIPO 390, 780 Holley, built C6, Crites Aluminum radiator, California rear floor pan, and a rust free frame from the south. Work continues.
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