4.0 Cylinder Block Interchangeability

Read the first post

I did read the first post and spent some time looking for an answer hence my question. I've not seen a clear answer to my question anywhere: will the newer model computer in my 99 be OK with a 98 block. I'm assuming it will but looking for helpful input please if this assumption is correct.
 
I did read the first post and spent some time looking for an answer hence my question. I've not seen a clear answer to my question anywhere: will the newer model computer in my 99 be OK with a 98 block. I'm assuming it will but looking for helpful input please if this assumption is correct.

The answer on block interchange is in the first post. If you are talking about cylinder heads and engine management that is something else. Depending on if you have a distributor or not there are other problems