The first link is the radiator I am using. It us plenty big. My car is mainly a street car and it almost too big for that. I am on my third OEM thermostat. The thing keeps the t-stat cycling so much that it eventually wears out and stays open. I've had a large piece of cardboard in front of it for the majority of winter and still never use the fan unless Im in bumper to bumper traffic. Both of those rads you have listed will take a bit of work to get installed. with my 26"x 20", I had to relocate the battery, make mounting brackets, and fab a 1-3/4 to 1-1/2 adapter with a 3/4" barb for the heater return. I really need to take pictures and post them, but Im ashamed of my leaky front cover and excessive blow by mess. When it warms up, I might do a little cleaning and snap some pics.
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