I have a '76 3.0si that I bought last fall and it runs like a bear in the winter. Starts every time and will go through anything with a set of Blizzak's on all around. My question is.....How can I get more heat to the interior of this car??? It runs great all summer with no episodes of overheating and it ran fine all last winter. I just need more cabin heat and defrost. What degree thermostat should I be running for winter???? can I make any mod's to improve heating. From what i have read on these cars, the trick is keeping them cool. That problem I don't have. Anyone have any thoughts??? Winter fast approaching.... TIA,