im looking to buy a engine harness for my 99 cherokee 4.0 auto but i am not sure what years will fit as well as 99 year harness's. i found some 98 and 97 harness's and one 99 harness but they are advertising it as coil pack still and i have the distributer. am i stuck with only being able to use a 99 harness with distributer plugs?