This post was going to be a question about whether swapping out the Renix for a newer 4.0HO is worth it, but as I started writing I realized my question was bigger than that.
My situation: I have an 1988 MJ which I recently purchased as a project. I also have a complete, running, 2000 XJ as a donor (it is rusted irreparably).
Originally my plan was to do the whole 97+ swap on the front end, engine, and dash. Then I started thinking more about the front end and I rather like the pre-97 aesthetic over the 97+. Don't get me wrong, I do love the 97+ XJ, I mean I have owned 4 over the years. But as I have been looking over different parts of the MJ seeing the date stamps on the Axles, Transmission, etc. I get a bit sad about the idea of just discarding these items since they are completely functional at the moment.
That being said, I understand the Renix is a finnicky engine. I also know that the Peugot transmission is considered "not good." I also would rather like airbags. If I decide to not keep it original I will likely source an AX15 to replace the Peugot, swap the rear for a 44 or 8.8, and the front for a "modern" 35.
The MJ is not in excellent condition, but it is OKAY. It runs and seems to drive acceptably (I haven't taken it down the road since it does not have seats, but I have taken it up and down my driveway). It needs floor pans, rockers, and rear wheel arches. I also need to replace the front fenders because they were cut for wheel clearance and I do no plan to run anything large enough to require cutting. Finally, regardless of which way I go, I will be installing some Corbeau seats a touchscreen head unit, and potentially other not-aesthetic tech. So it really is at a crossroad of "restore to original" and "modify to fit."
So what is your opinion? Keep it original as possible or modify it to my heart's desire?