440 source???

I put the 500 kit in my 440 and im happy with the bang for the buck. I agree the long rod motors need special machine work due to the fact that the piston dwells on top longer and that hammers the bottom end more. I went with indy ezs on top for the longer valves.The 500 kit uses a stock rod lenghth with a 4.15 crank to pump up the cubes. 500 will also clear the oil pump pick up where as the 540 kit has to have an xternal pick up i believe.