1976 Dart Overheating and other issues

A ton of great advice offered here. heres something i learned a while back, its on a newer jeep but very similar.
Overheating on warm days at about 20 or 30 miles driving.
Thermostat, fan clutch, water pump and flushed multiple times. same issue. Rad was plugged. Like totally blocked.

The telltale,was when it was getting way up on the gauge, the air passing through rad should be extremely hot. Its wasnt. by placing my hand (away from any moving parts) in the wind that the fan generated it was unusually cool for such a hot engine. After solving the problem, i cut the rad open. BB9E14EE-D4D4-4AC7-93FA-17853A95B87E.jpeg A1CA4B8A-1718-486C-BE69-7EAFF2C8FF2E.jpeg