I just replaced the radiator in my 60. I was wondering if I am to fill the block throught the thermostat housing? I have never done this before and I am a little concerned on how to get the antifreeze back in there. Also the radiator cap on the old radiator was bigger that the new opening. It is now about an inch and three quarter of an inch. I bought the radiator from Performance. They seemed to get a good write up from you guys. I ordered a new cap from Toyota, but I have no idea what sixe that one will be. Thanks