I ,am in the process of swapping out a 97 4.2. Have purchased a 99 4.2 out of an E class van. so far have found exhaust manifolds, intake and plenum and some of the electrical sensors and harness to be different. does anyone know of anything else I should be aware of or concerned with. Also were can I find torque specs on manifolds ???

 

Any good auto parts store will carry Chiltons or Haynes manuals for those year engines.All the specs are in them.Good luck on the change out!