Do any of the engines have a EGR valve, if so you will have to swap all EGR compnents, basically the upper intake and wiring harness, other than that they should swap over fairly easy. Or you can swap upper intake manifold without EGR and swap drivers side exhaust manifold. The drivers side exhaust manifold has a tube that goes to the EGR set up on the upper intake. It should be a straight swap if they are both the same, if you do have to swap upper intakes and wiring harness it is easy about a extra 1 1/2 hours work tops.
I just did this on my 1993, donor motor had a EGR and I didnt want it, so had to swap components. Good Luck, we will be here for support and questions.