Will an 11" wheel fit?

Can you guys tell me if these numbers look good to fit an 07 GT? I am looking at a used set of wheels in this size. The manufacturer says they will fit, I am just wondering how much they are going to stick out. Anyone have a pic of an 11" wheel on a stang?

20x9, 2" lip offset +34 front
20x11, 3" lip offset +43 rear

I spoke with NC Forged yesterday about another set of rims. At 10.5 rear, they said they could do a 4" lip. Sounds huge!!!

I found an offset calculator. Here is stock compared to the wheel specs.

Stock - 18", 8.5" wide +45 offset

Aftermarket - 20", 11" wide +43 offset

The calculator says that the rear setup would have 30mm (1.1") less inner clearance and extend out 34mm(1.3 inch) on outside.

Does this sound like there would be an issue? I don't know much about the inner clearance.

Any info appreciated!

Thanks