1936-37 Chevy Twinflow Heater Core Price $299.00 Prev Next Product Description Are you searching for an 1936-37 Chevy Twinflow Heater Core in copper and brass heater? You are not alone and you may be in luck. We make our own cores and fabricate our own tanks so, naturally, we get asked to build custom heater cores or "small radiators." We prefer to have the housing or original in hand to assure fit. We charge a shop rate and materials for the fabrication of the heater cores. Made in the USA You may mail your contact information, the heater core and assembly to: The Brassworks 500 Linne Road - Unit I Paso Robles, CA 93446 805 239 2501 Email email@example.com when shipping the heater core so we know its in route. You may also fax a drawing with dimensions to 805-239-2545 to get the process started.