Heater Core Location

Having a little trouble figuring out where the heater core is for my '98 F-150 STX. When I bought it last week, they guy selling it to me said that it's behind the glove compartment area and one of the guys that I work with told me yesterday that it's somewhere under the hood. Now my head's f***ing spinning. Does anyone know where the hell it is and how to get to it?
-Lenny
its definatly under ur dash and is usaly accesed from the passenger side and that invovles most of the time removing ur glove compartment. as for exact removal instructions u would need too consult a Haynes manual or google it. i cant tell u how its done on this truck cuz i havent had too do it yet.


