looks like a single flow design, and probably copper given the car's age (last made in '59)...
http://www.procooling.com/reviews/html/little_river_whitewater_waterb.php slight outperformance by the aussie original at v.low and high flow...
http://www.ocforums.com/showthread.php?s=&threadid=292859
don't know if anyone is interested, but there is a '65-68 Ford Mustang Heatercore for sale (not by me i hasten to add) on uk ebay - (currently v....
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