What year MJ and engine do you have? Add it to your signature.
Renix and HO are different, 2.5L I think are the same as 4.0L Renix..
Renix 5/16 line https://www.morris4x4center.com/fuel-oil-cooler-line-repair-kit-83502745.html
HO 3/8 line https://www.morris4x4center.com/fuel-oil-cooler-line-repair-kit-83504447.html
And it goes o-ring/spacer/o-ring
Just remember, there seem to be two types of 10 hole wheels, ones that have a bevel to the holes (countersunk) and the little JL indentation like the ones you're showing and ones that do not. This illustrates the differences.
White seems to endure the sun the best, so you have that going for you. Like mentioned above a dash cover helps, I've had one on since new, 30 years ago and I also always, always, put a sun shield in the windshield, dash still looks new.