This..some camshaft,an air gap intake,a good reground cam,& some GOOD valve springs (1110 Hughes,or equivalence) You have a Mopar with leaf springs,it can be tuned.. Go get a Direct Connection/Mopar Performance Chassis tuning manual ...It teaches some really good technical,and gives you a basis to work from.... Just my opinion:If the engine currently runs,work the chassis first.Quick E.T.'s come from reliability & knowledge ,come from knowing the chassis..,Then you add the horsepower...Just my opine....