Mike I replaced the heater core on my wife's '86 5kTQW last year. Did it without removing the dash, just alot of crawling around *under* the dash to connect the vents and the pneumatic control lines. It's a bitch but there's worse out there! You must think I'm making this up, or that I was hallucinating the friggen job. No way does the dash have to come out....no way! Steve Calgary Alberta