spacers for ZR-1 rims

[hotrod275315]

just wondering what size spacer is needed for mounting ZR-1 corvette/camaro rims onto t-type/GN... have heard two different thicknesses, 1.75 inch and 2.0 inch..any help...and if anyone has a picture of a set on their car, please post, thanks

 

[hotrod275315]

anyone tried this ??? black or silver wheel pictures would be great, thanks