Got this for a '99 XJ, 4.0 w/ AC & the fit/finish is excellent.
This appears to be a true all brass (alloy?) construction, way better in every aspect re: heat dissipation, strength, etc., over today's POS composite rads.
As always, it's good practice to ensure a good T-stat, hoses & of course H20 pump along with new belt (you're in there anyway). The standard flush/fill still applies (I'm old school) and all this is just cheap insurance for a nice, long & trouble-free cooling system.
I had my misgivings re: POS (plastic/aluminum) rads on the market today from years of previous experience with them. Case in point: previous replacement (aftermarket) prior to this CSF lasted just (1) year before leaking at the core (despite good practices too).
Thankfully, an all metal rad that won't break the bank, time will tell if durable however off to a great start.