Thanks for ALL of the so-may replies and offers of help re: the heater core. It would take me at least an hour to reply to each one individually. What a great group. My core is on its way to a club member's radiator shop in NJ for a fresh recore. Actually I should say cores (plural) as the identical one in my '62 Nyker wagon started leaking today as well! I will report back to the group on the successful completion of the task. Thanks again to each and all that replied and offered to help John Hertog Sag Harbor NY