Heater Core Leakage....

[mudunit77f250]

i just found out today that my 77 f250 has a leaky heater core, so i pulled the whole heater assembly, and i know that i have a spare kicking around from a donor rig, biut is it actually going to be worth it to install a used one or should i just spend 30 bucks for a new core from LMC truck catalog?
the truck does not have AC just as an fyi

 

[broncoshell]

I think i would go with the new one. I got a 74 bronco & i got the heater core at NAPA for 18 bucks. good luck!!!