I'm kicking around adding a condensor fan. I added a 100-series OEM condensor fan to my '93 80-Series. Didn't notice any real difference but my cooling system was working fine beforehand. A/C never kicked off, even in Moab in July.
This is exactly what I'm doing on page 25 of this thread. I'm sticking a 16400-50360 on my 2005 and won't look back. $394. Any cooling degredation would be miniscule and probably not caused by the earlier model radiator but more than likely an already weak fan clutch, etc. AND keep in mind...
When I ordered it, it said Mexico Spec so that's why I'm saying it that way. Yes, it did get superseded. I don't care what it's spec'd for as long as it will work on my 100.