Here's what the evaporator looked like, even after flushing with a foam cleaner while it was installed. Obviously the foam wasn't intended for flushing out this level of dirt. Maybe flushing it with a ton of water would have helped. Really surprised at how many fins are deformed - pretty sure it's original to the car and that the housing had never been opened, so apparently it got damaged during installation.
Also, the heater core as it looked straight out of the car. Will probably give it a quick clean with some coil cleaner and reinstall as-is, or possibly after a bit of fin straightening if possible.
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