Did some research.... checked things out, and the big rub, is getting the core in and out past a metal and rubber gasket between the cassette, and firewall with the bent core pipes... perhaps putting the gasket OUTSIDE the firewall, would make changeing it easier , without having to pull the whole A/C cassette the next time, but who figures on keeping a car that long??.... therefore the dash has to come out , the A/c disconnected at the firewall, and then the cassette has to come out with all the connections, fittings, etc. removed , then yoiu can pull the core... Putting it back together calls for a new drier, and of course ford would also install a new orfice, etc... before rechargeing the A/c system ....... just not a pretty task to contemplate. The Ford 'better idea' bites me in the butt again!