HRL, as noted above I definitely used the adapter plate from Davis to move the water pump up. I did take the thermostat back out and drilled an 1/8” hole in it to prevent vapor lock as someone had suggested elsewhere. I am definitely filling the radiator completely up. I guess I didn’t know any better. The radiator seems to look like an original in excellent condition. The funny thing is the radiator cap looks like the oldest rusty colored thing on this truck. i’m guessing it is what you would call a zero pressure cap? I didn’t know about overfilling the radiator. Are you saying that once the excess water purges itself I might be good to go and keep an eye on it from there?