radiators are about 120ish, not bad. Should do water pump while you're at it, and thermostat.
What size lift and tires on the Cherokee?? Those don't look like 35s! Shouldn't take much money or time to get that thing wheeling!! Make sure he swaps out the Dana 35 rear axle for an 8.25 from a 96 or newer XJ or a Dana 44 from a 87-89 XJ. Or, you can get rear discs if you swap in an 8.8 from a 95 or newer exploder. Grab one with 4.10s and regear the front too. Just have to weld on spring perches and get an adapter for the drive shaft.
Yeah, you need to put a solid axle in the pickup if you want to lift it...or wheel it. Not that hard if you can weld and fabricate.