WTB: MKII non-A/C Heater Box

[bmatthis1]

Pulled my heater box today to replace the heater core and found the top of the heater box had melted all over the top of the core and they are now permanently one unit.  So, I now need another heater box to go with my new heater core.  Anyone have a non-A/C heater box they can part with?