TA 340 6 pack in a 68 Dodge Dart vert

Here is what I know works: and what is stock-appearing.

-26" A/C rad; oem 1973 Dart,in my case.
-matching factory shroud
-Hood seal
-Hi-flo Milodon aluminum pump. I think it has 7 or maybe 8 vanes,but the important thing about it is the anti-cavitation plate. You can buy those separately to install on your pump. And it has a larger diameter pump shaft, which I thought would be a good idea for all those 7G pulls I was planning on.
-Hi-flo 195 stat ( mine runs 205 on the hotside, always has)
-7-blade large diameter,steel clutch-fan with swept back tips
-Thermostatic fan-clutch; mine is a Ford part
-1:1 ratio drive pulleys. ( mine are underdriven cuz I shift at 7000 plus and it's a manual trans)
-I used to run 100% water with an additive pkg, cuz water is a far superior heat transfer medium than ethylene glycol. But eventually I found that I could run 50/50 and not have to drain the system for winter.
-Coolant recovery tank; mine is also from that 73Dart parts car.
-And the aforementioned 7 pound cap

In addition:
At 10.9Scr with aluminum heads,I run 14* at idle, 28* at 2800, switching to 34* at 3400;and a 22* Vcan that is in real early.This with a 230cam.Cylinder pressure is around 175/180,IIRC
I run a little rich on the low-speed circuit
And fresh,cold air to the carb. This was a very big deal to achieve a consistent idle. And I don't think it doubled the engines power,lol, but.......IDK; it sure pulls harder.
I run 3.55s with a GVOD so 65=2240 rpm. I have run up 65= 3035 with no change.

This engine runs at 205*F by IR gun and never more as far as I can tell. The only time I ever look at the gauge is after a 7000 rpm blast, just to be sure the V-belt is still on the pulleys.
The only way this would not work is if
A) the engine goes into detonation
B) the stat fails closed
C) she has internal cooling system troubles
There are tests for those conditions.
Iron heads will put a little more heat into the cooling system, But the only thing that would should change is the thermostatic fan run-time.