i dont know how schooled up you are on those idi's but they are super sensitive about their coolant. make sure you use coolant that has sca's already added (the additives you can add your self are a pain in the ass) i loved my idi, but it had 4.10's and it was pretty tached out at freeway speeds. sold it for 7k though, so i cant complain
__________________
"the path of greatest resistance reaps the greatest rewards"
-me
Yeah, the 7.3's have a big problem with the coolant eating pin hole in the cylinders walls if you don't keep an eye on the SCA, I really wanted to find an 85 or later 6.9 but I couldn't be to picky.
I saved the stock CJ shock mounts before they rotted off the frame. Ground off the rust, drilled drain holes, treated with converter and 2 heavy coats of Rustolium semi gloss, new hardware..