87 coupe deville engine question again
 

since my last post was retopic'd i dont want to add this to it.
My coupe has the 4.1
So my girlfriends dad said he can get me a running perfectly 4.5l out of an 88 coupe. It got rear ended HARD and is not going to be fixed. I can get the engine for $100 plus we have to pull it not to bad of a deal.
So my question is since it is a 4.5 will i need to swap the computer? ( i assume that the emisions, fuel, air and other stuff are different amounts than the 4.1L) Are all of the parts interchangable?

I dont know what pertains to my last topic since that was allante engine stuff.

Please once again just need a list of what will be interchangable and what will need changed. I am not the most mechanical person so be blatant.
My car has the all digital dash, cruise control, A/C

RE: 87 coupe deville engine question again
 

You need engine, engine wiring harness, and ecm. Engine will bolt in.Making it work will require additional parts.