I run the following:
69 camaro rad
Spal fan
water wetter with straight water
Flexalite fan controller
lots of ducting
i never hit above 200, im usually at 180-190. 200 is my limit.
Sometimes when I go up a hill at low rpms/highload temps climb to 200+, then I ease off or lay into it to give the rad some airflow... im sure the cops dont like it but whatever.
Im putting an aluminum replacment rad in soon and will work more on the ducting more to solve that.
200+ is a bad thing. Temp issues go away when the ambient temp is below 20 deg celcius, BTW
just watch your temps, if they climb at cruising/high speeds, work on ducting. overheating in traffic, stoplights, wokr on your fans.