Hmmmmmm Jamo, that's interesting. Maybe I don't NEED a heater, although Fresno has a dry cold (and heat), like when I lived in San Bernardino (same desert). Anyway, I will give it some more thought, but the Vintage Air compact unit was looking like the front runner as long as there was enough space under the dash.
BTW, any Kirkham owners at least know the height of their
oil cooler (4 or 6 in)?