Waterless Coolant

Has anyone tried the Evans waterless coolant system I have a 440 dart GTS ( bored to 472) Runs hot after flushing the system, adding new coolant, adding a shroud, adding an electric push fan and adding an overflow tank.

Runs at 180-185 on the highway but around town gets up to 210/220

I read the posts on the "Do all A bodies overheat" thread but I'm still at a loss. Thinking of trying this. Any experience/opinions?? Thanks