thermostat or not or what?

I reckon the best value for money on the planet for rads is that monster 31" x19" summit or Jegs knock off of the Griffin for under $200 you couldn't even buy a decent stocker and it's about a third of the weight.
I had one in the dart with that big 'ol 556" KB hemi and the thing used to take 10 mins to warm up, the only time I ever over heated it was when I forgot to turn on the Mezeire electric water pump and even then it took ages before it got hot- LOL.
You have to notch the frame rails about an inch on each side to fit it in, but it most definitely works!
My little Jap motor makes just as much HP as the hemi and it's cooled by a tiny little rad, BUT they have the thing enclosed and properly ducted into the nose of the car, so all the air actually goes through the rad' instead of over or under it.
I'm busy putting the 69 cuda back together and I reckon I will try and copy the cooling system in the Skyline, Ti 'cooling plate' 'n all!