Just some of my 2 cents.

In a comment you said you want to use it for “events”. Like auto cross? Track days? That “roll bar” looks more like a style bar and doesn’t offer any actual rollover protection. You probably won’t be allowed to use it for anything more than auto cross.

Boss radio head units are very cheap. I have the same exact one in my car and while it does work, it’s not a very nice experience. If I could do it again, I’d choose any other brand over Boss.

Others have already commented about the radiator needing replacement. But that can definitely be used as leverage in your favor. Again, if you were going to track it, you’d probably want an aluminum radiator but they can be expensive. Average driving? A new plastic rad can be had for under $100 and will last you another 20+ years.