IRCM off of my '94 Automatic reads F48F-12B577-BA
The replacement IRCM I have in my hand that supposedly came off a parted out '94 SC reads F78F-12B577-AB
On F78F I have a date of 25 Sep 1999, with a C on it.
F48F (orginal) has no date and reads E
Interchangeable or not?