This is the factory schematic:



The heater core has metal pipes that go from the core through the firewall

#32 is the heater core
#40 is the condensation drain (cold water)



Was a genuine heater core used or an aftermarket one?

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[CENTER][SIGPIC][/SIGPIC][/CENTER]
[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]