2001 stock offset

Hey guys, I have been scouring the interwebs for the stock wheel offset for a 2001 Mustang Convertible V6 base. Currently my car has 16" stock wheels.

I am looking at a nice set of 16x7, 16x8 wheels with a +45mm offset. I just cannot seem to figure out if these would fit correctly without spacers etc.

Any help would be appreciated. Thanks!!

PS: I would measure myself but my pony is in the barn for the winter.