Not 100% certain, but I think the factory tire size for the 1994 Ford Mustang is P205/65 R15 92s. Hope this helps, take care.
corral .net
The 2000 Ford Mustang with a 6 cylinder had a V6 3.8 Liter engine from the factory.
195/70R14
The 5.0 liter ( 302 cubic inch )
According to the 2003 Ford Mustang Owner Guide : It came from the factory with the ( Motorcraft BXT- 59 battery ) * that's BCI group size 59 *
Ford Mustang/Forth generation/1994-2004
The 2001 Ford Mustang has a V6 engine.
The 2010 Ford Mustang has a V6 engine.
The 2008 Ford Mustang has a V6 engine.
The 2002 Ford Mustang has a V6 engine.
The 2013 Ford Mustang has a V6 engine.
The 2004 Ford Mustang has a V6 engine.