Get the radiator rodded out and check the cooling fan clutch.

If it's running warm at highway speeds, the radiator is the likely culprit. If the issue is only at idle and/or under 45-50 mph, the cooling fan is the suspect.

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum