97 F53 radiator

Hey Scott, I have the original copper brass with composite tanks. I just a few minutes ago ordered a new 100% aluminum for $750... I know copper brass cools better than aluminum but from what I’ve been reading the new alluminum Design uses stronger bigger tubes so they can be only One row vs stock two row and cool about the same but the aluminum has better air flow because of the design. The company I purchased it from was radiator Express and they have a no haggle return if I don’t want it so I figured I would at least get it on its way here so it comes before the weekend and can always return if need be. The coolant keeps appearing below, on the bottom support but even with the borescope everything looks pretty dry besides a slight seepage on the passenger side tank.. so slight it’s just a damp spot with no actual coolant but I’m thinking it could have leaked some on my recent three hours of driving. The funny thing is my overflow tank is still at the level I filled it to.