JIMIS RIGHT AND MICHEAL DID CHANGE A LOT OF PARTS ON HIS TRUCK, THE ENGS ARE COMPLETELY INTERCHANGABLE , IF YOU SWAP OVER THE DIST AND THE ENTIRE INTAKE MANIFOLD ASSY FROM YOUR OLD ENG TO THE NEW ONE , IF YOU DON,T HAVE TO WORRY ABOUT EMISSIONS TESTING JUST LEAVE THE AIR PUMP AND RAILS OFF OF THE NEW ENG , BUT BELIEVE IT OR NOT IT WILL STILL PASS AN EMMISSIONS TEST WITHOUT THE AIR SYSTEM ON THE NEWER ENG , THE NEWER ENG IS A SEQUENTIALLY FIRED INJ SETUP AND THE OLDER ENG IS NOT SO BE SURE TO USE THE OLDER DIST AND INTAKE ASSY COMPLETE AND YOU WILL BE FINE ALLSO USE YOUR OLD EXHAUST MANIFOLD MOST ALL OF THE NEWER 2.6,S USED A SINGLE DOWN PIPE FOR THE EX. THIS INFO PERTAINS TO ENG,S THAT WERE U.S. BOUND AND THE INJ SYS ON YOU SYSTEM MAY BE A LITTLE DIFF , SO TO BE SAFE JUST USE ALL THE CONTROLS FROM THE OLD ONE JERRY