Thank you, but I already have the Haynes book. I'm looking for an official Ford Service ManualLooks like you can still purchase a 1994-2004 Haines Repair Manual for a 1994 Mustang either as an online version $29.95 USD or hardcover (or both) $39.95USD.
Here is the link (hope that is ok?)
Repair Manuals & Guides For Ford Mustang 1994 - 2004 - Haynes Manuals
Detailed repair guides and DIY insights for 1994-2004 Ford Mustang's maintenance with a Haynes manual.haynes.com