Well my heater core cracked today on the way to taco bell. So right now I am trying to find a new one. I have looked online at all of the auto parts stores and other parts store online, but it seems like no one sells a heater core for my trooper. Has any one else replaced a heater core on a first gen trooper and know where to get a good deal on one? If not I know of a junk yard I can get one from, but would prefer a new one. I will also go to napa tommorow and see if they can look one up for me in a book or something. Please help me if you can.
Thanks,
Kyle

Do a search here on Jerry LeMond. He used to be the lead instructor at the Isuzu factory school and has acquired and sells quite a few Isuzu parts. I got my heater core from him.

It is not a fun job to do, but it is doable.