Most of the time we start off a how-to showing the completed job, but with a Fox-body heater-core replacement, that would look the same as when we started. So, we show the disassembled interior. Here, the dash is separated and down from the firewall, and the heater core has been removed. The console, stereo head unit, and gauge cluster are totally removed, and the steering column is dropped. The column doesn't have to be totally removed, but it must come down enough to let the dashboard come away from the firewall and windshield, allowing access to the core inside the evaporator case. Figure on a fully experienced shop taking a full day to do the job. We were at it for a solid 10 hours from beginning to end.