18 years is a good run for a rust belt vehicle with a poorly designed frame coupled with a lack of proper maintenance along the way. Not dissing you, you would have needed a crystal ball to know what would become of most TJs in the northeast back when you got this, just saying despite all that you had this longer than most people keep any vehicles. There's a time to put sentimental views aside & see things for what they are, and those recent photos are horrendous, I'd return the safe-t-caps if you can or sell them, there just doesn't look to be enough meat left to weld them to, not to mention that tub... continuing on with this I believe will be regretted in real time and in the long run. TJs are cheap now, I look at them all the time on FB Marketplace, prices are the lowest I've seen since I got mine in 2016. Granted, many have issues, but if all you're looking for is a few more years you can accomplish that with 1000% less aggravation by dumping this/parting it/keeping it as a donor for another you can grab on the cheap that still has a few years left in it.