" From: "Munro, John" <John.Munro@xxxxxxxxxxxxxxx> " " Needing a 4.0 Liter Head for Conversion from 4.2 Liter " " " " 1991 or newer. These are high port, H.O. (High Output) heads used on all " 4.0L Engines. " " " " Head casting # 7120 " " " " Hopefully this info is correct so far. #7120 was used '91-5. #0630 was used '96-8 and is nearly as good; #0331 '99-up and is widely considered crap: small ports and prone to cracking. only plus: coil pack mounting bosses for dis. the intake that goes with the #0331 is better than the '91-8; some say it's good for 20hp - and a like amount of torque - just by itself. it still fits all ho heads. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com