THE 3.5 2002 REPLACEMENT ENG IS THE NEWEST ENG USED FOR REPLACEMENTS IN ALL 98 THRU 2002 TROOPERS , THEY COME AS A COMPLETE CRATE ENG MINUS BOLT ON ACCESSE, AND MANIFOLDS TOP AND BOTTOM , MUST USE OLD ENG MTS, . FRT CVRS AND LOWER CRANK PULLY IS INCLUDED ON THE ENG, NEW STYLE VLV CVRS , A COMPLETE BOLT IN CONVERSION, FOR THE 98AND LATER RODEO OR AMIEGO, EVEN COMES WITH THE OIL PAN AND CRANKCASE INSTALLED ,AND IT WILL RUN WITH THE STOCK ECM WITH NO REPROGRAMING AND IT WILL PASS AN EMISSION TEST JERRY