You will need new cams to produce power up there. And you will want new valve springs to operate about 9000rpm too. The clutch commence switch and starter relay were tied collectively to the engine harness facet. So i just soldered these connections alongside one another on the body harness https://johnathanqaywy.worldblogged.com/39216948/4age-blacktop-engine-for-sale-can-be-fun-for-anyone