Am trying to determine if i have a 0331 head on my 2000 cherokee ? Can't find a # on the head ? I have a big white bar code on the front of the valve cover with a bunch of #'s on it, can you determine what type of head you have anywhere else on the jeep ? what about a build sheet will it appear there...thanks

 

Drivers side, near cylinders 3-4 next to vlave cover the number will be cast into the head, may have to egrease to find/read it. Unless someone swapped it out you will have #0331