Well according to the ford service bulletins found on auto-zone's website the blower motor on a 1978 ford LTD w/ac is accessed through the passenger side fender well and a access hole must be cut to access it!!! This is going to be fun!
I'm linking the page In case anyone else ever has this problem
AutoZone.com | Membership Benefits
If someone would please explain the finer points of this job I would be very grateful.
Thanks!