1992 sieera heater core/cost

yes just bought the truck and the prev owner,had bypassed the heater core .so I'm thinkingi'ts bad .how much do you think itwould cost and how too replace it thank you.

i wrote the ? wating for answer

Kinda anxious here, no? It is early Sunday am, maybe most people haven't gotten going yet! Does it have a/c?

http://www.rockauto.com/catalog/x,carcode,1143818,parttype,6864 $ 30 - 70