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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
I don't believe there's any practical way to convert to a DR w/o converting to the later opti which will also require extending your cam pin to .620" and getting the later timing cover. A good DR set-up is the Cloyes 9-3145 but I'm sure CC probably makes a good one too. Also, if your cam went out of time, you'd better check for bent valves.