I have seen many CTS-V wheels for sale on this forum and eBay. I've alway thought the CTS-V wheels look very similar to the HSV GTS wheels. Do the CTS-V wheels fit the G8GT? Most of the CTS-V wheels I have seen are staggered (245/40/19 & 285/35/19). Are the front and rear offset a good fit? Also, I have been doing some research to see if the HOLDEN GTS center caps will fit the CTS-V wheel. But, I have not found the outside diameter and inside diameter of the CTS-V wheel center cap area or anyone that has used the HOLDEN center caps on CTS-V wheels. Does the GTS center cap fit or does anyone know the OD/ID of the center cap area?