Cold Case or Griffin radiator in a 1970 Duster?

If I drove my high compression stroker on the freeway more. I would have to put a thermostat in it because of my $140 radiator would bring it down to a 150° on the freeway...
Id hope that radiator would work great. Driving down the freeway isn’t hard on it. How does it do in traffic, waiting idling in construction for 15 minutes during summer.