No diesel yet....planned conversion about this time next year.
I have all the parts lined up but I don't want to have the rig down for a long time.
And to keep this post on topic when it comes to older rigs I think for a very resonable cost you can bring many aspects up to a modern and comfortable level.
For example I paid $4500 for my used 1970 Suburban (pretty much what it sold for new so great return on investment for the original owner).
I will have another $5000-$7000 into it when all is said and done.
That will give me a 4 passenger rig, that can sleep 2-4 inside, get 20 mpg, have front & rear ARB lockers, mild lift, Hannibal awning, solar powering dual batteries and that I am pretty sure I could sell for $10,000 all painted and pretty....or keep forever.