96 3.8 stock plug gap?

[Dohc32vMarkVIII]

I'm changing the plugs and doing an oil change on my girlfriends 96 3.8, and I can't seem to find an exact plug gap. Can anyone tell me what to gap these Champion coppers at? (stock car)

 

[ChingonStang]

The plugs from the dealership are already pre-gapped.

However, my old Mustang V6 96 Haynes manual says 0.054