I can't help you with the replacement, however, a good resource to help guide you through repairs is the Haynes repair manual. It is about $12 at advanced auto parts. I used it to do a number of repairs including an exhaust manifold replacement on a 94 grand cherokee laredo 4.0 straight 6. In my opinion it is a worthwhile investment. Good luck!
It doesn't matter what you drive as long as it is a JEEP.
98 JGC Laredo 4.0, 3" lift, Rustys adjustable UCA's & LCA's, Custom K&N intake, high flow exhaust, Jet chip Stage 2 and 32x11.5 BFG TA's