Those are very different! The 89-93 are pretty much the same and the 94-95 is the same.
Are you looking for a compatible DIS for your car?
Applications: 89-90 SC 3.8, 89-90 XR7 supercharged 3.8, 89 Taurus SHO 3.0
Ford Part: E9DZ-12A297-B
Motorcraft Part: DY-554
Applications: 91-93 SC 3.8, 90-95 Taurus SHO 3.0, 93-95 Taurus SHO 3.2
Ford Part: F1SZ-12A297-B
Motorcraft Part: DY-655
Applications: 94-95 SC 3.8, 94-97 T-Bird & Cougar 3.8 (California emissions ONLY!), 94-01 Mustang 3.8
Ford Part: F4ZZ-12K072-A
Motorcraft Part: DY-689