Center Bore Measurement for Wheen centric Spacers

[WINSTON]

Does anyone know the center bore measurement for the 5 spoke 17" x 7.5" wheels? I am replacing my wheels with these and am ordering the hub/wheel centric spacers and need to know the measurement. Was unable to find.

Thanks.

 

[WINSTON]

Also will be ordering the 20mm spacers to make it flush with the fenders. Any issues with lowering using Eibachs? Any other suggestions, I believe the offset of the wheel is 60.