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    98TM heads recommendations for a 1998 4.0 OHV using a stock short block with a Comps CAM 49-422-8?

    Where to buy 98TM heads for a 4.0 OHV using a stock short block with a new Comps CAM 49-422-8? What kind of HP could this provide? How much should the heads be ported? What other upgraded parts should be installed with the heads (5.550" rod length, double springs, etc.) ?
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