93 350 TBI It looks like it is under the dashboard and may be difficult to remove. My haynes manuel doesn't get into it.

HAHAHAHAHAHAHA, Sorry, I'm still laughing maniacally from the last time I did an Evaporator Core. IT SUCKED!!! I killed a day just trying to get close to it, then wound up paying somebody else to finish the job. I just flat ran out of time. I don't think I'd tear into one that I needed to have running again anytime soon. I'd make certain I had back-up transportation before starting the job.