I run an aluminum "muscle car" radiator from Mancini in an E with warm 496 and AC. The thermal clutch fan is slightly overdriven and and high volume water pump. Cools great. Right on 180 degree stat temp when rolling and a little warmer at a stop in hot weather.

In your situation, 195 rolling with a 160 stat means the radiator is maxed out. Not enough capacity.

A really good 22" radiator may help if everything else is perfect: good shroud, strong fan and matched clutch, pulley ratios that give some OD and good water pump. The Muscle car radiator is available in 22" and I do not know how it compares to the Northern or what you have now.

A 26" wide radiator, especially with BB, would help a lot.