a friend of mine put a 4.0 head and injection system on a 4.2(nothing new there) to install in his cherokee. once completed he called me and said the locating pins on the trans lined up and one bolt, but no others. i thought almost all the jeep motors were interchangeable? if i can put a 4.0 in my 89 4.2 wrangler, shouldnt he be able to put a 4,2 in his cherokee? the motor came from an 88 yj with the peugot. i think his cherokee is a 92...not sure. any help would be great