Early in pre-production there were some indications that portions of teh front suspension required mosification to comply with curb contact in teh US. Also, several thousands of miles of tuning miles were used to give the G8 its own ride and feel. An interesting comparison would be back to back on track testing of both the G8GT and the Commodore SSV. I know
one or more of the mags flew to Oz and tested the Holden version there, but they only reported numbers as repoted by Aussie magazines.