BOLT IN AND HOLD ON.THIS ENGINE IS IN GREAT SHAPE WITH ONLY 25 HRS ON THE TOP END INCLUDING PORT AND POLISHED HEADS,NEW CB 310BS-14 CAM SHAFT WITH A GROSS LIFT OF.637 MATCHING NEW SOLID LIFTERS,ROLLER ROCKERS,NEW SPRINGS AND MANLEY SEVERE DUTY VALVES.NEW DOUBLE ROLLER TIMING CHAIN WITH CONVERTED TIMING COVER.SUPER CHARGER WAS REBUILT LAST YEAR WITH ALL NEW BEARINGS AND SEALS.IT ALSO HAS THE SMALLER PULLEY AND INTERCOOLER.LARGER PULLY WILL COME WITH MOTOR.THE BOTTOM END HAS ABOUT 100 HRS ON IT WITH THE BEARINGS REPLACED,HONED CYLINDERS AND NEW RINGS.IM NOT SURE OF PERFORMANCE NUMBERS BUT THE MOTOR MAKES ALOT MORE POWER THAN STOCK AND WILL REV TO 6K.FLY WHEEL,FLEX PLATE BELL HOUSING OIL COOLER,AND MOTORMOUNTS COME WITH THE ENGINE.THIS ENGINE IS READY TO INSTALL AND NEEDS NOTHING EXCEPT YOUR DISTRIBUTOR,ALTERNATOR,AND EXHAUST. THE PRICE IS FLEXIBLE.THIS WAS ONE OF MERCS BEST DESIGNS.I BUILT CUSTOM MOTORS SO IM SELLING THESE.ONE LEFT.THIS IS A GEN 6 ENGINE .8500 OBO   949-292-9343  JJONES300X@YAHOO.COM