Re: Heater box water leak
I think he's crazy, time for another mechanic. Most likely the dash does have to come out. I no it's not the same, but I did mine on an 1985 F150. Dealer said $330.00 labor. I did mine in about 2 1/2 hrs. and I wasn't in a hurry either. Yours may be more difficult, but I don't believe it is a dealer only job.
Also, need to be sure it is the heater core and not leaking around the windshield.