I have a jlt Cold air intake, steeda charge motion plates and off road H. Should I go shortblock? I found one for 3,900 http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&toolid=10001&campid=5335821607&icep_item=192024178221 Or buy the rotating assembly? I was in a heated discussion...