I looked at the Aero Detail #6 book and its subtype section shows the A-5/U8 with Junkers-style wing tank racks fitted.
The section on the G-variants says Fw 190G-2 was a renamed A-5/U8 with Messerschmitt type racks as
standard equipment.
However, some pages back in the section on drop tanks, there are photos of both the Junkers and Messerschmitt type racks, with captions saying the Junkers type rack was fitted to A-4/U8 (G-1) and A-5/U8 (G-2) and Messerschmitt type racks fitted to A-5/U2, A-8/Jabo and
G-2.
So I'm not quite sure if there's a clear-cut answer. I hope someone more knowledgeable on the subject could chime in.