Any advice out there regarding a heater core on a '68 1750. Mine seems to have stopped functioning. Imagine, after 40 years! The blower still works though. Anyway, I seem to have flow through tthe heater (when the lever is set to heat), but no heat, and I suspect the core has just deteriorated over time (fins finished?) If I remove the heater, which doesn't appear to be too onerous a task, can I take it to a rad shop and have them recore it, or am I better finding some sort of original part. Depending on the amount of time and $$$ I may opt to leave it as is. It's not as if I really need it, though it is nice to have on those brisk fall/spring days. Thanks!