Hi jlmust.1. Here is a step by step article about the replacement of a heater core on a 79/93 Mustang:Mustang Monthly2. Any Mustang parts store will have them in stock. Here is one of them:Mustangs Unlimited
i didnt check out the link but heres another like to repair http://www.mustangsteve.com/heatercore.html on this one you dont have to discharge the ac and you just cut the box openone word of advice make sure to fluch the coolant system so the fluid doesnt eat your new core
I like your Boss 302 in your thread,i have the same one [color]in my garage now for 23 yrs,needs to be restored.
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