'98 E-250 5.4 heater questions
 

I'm about to install a Webasto Thermo Top C aux heater into my '98 E-250 with the 5.4.
Which one is the inlet into the heater core ? Does the 5.4 has a fuel return line ? If yes, diameter ?
And how do I get the front clip below the headlight off to mount the heater below the headlight ?
Thanks !