Second post for me. Probably more to come. My step-father had a '67 GTO and he passed away this year. It's now my mothers and I'm, by default, tasked with maintaining it. I'm trying to find out what's the best place to buy a new heater core and possibly the heater box. The car has been in storage and he ran it 2 years ago but not since. I went to look it over and found a nice puddle on the passengers floor. Pulled the heater core out (!!!) and it's been leaking and the box is corroded too. Need to find parts. Do you guys have certain places that are good suppliers of parts? I found a core at Chicago Muscle Car Parts for $45.00 and it shows the box as used but no price. Is the $45 a fair price? Any ideas on the box? Thanks in advance.