Looking to change original single sided exhaust to double sided. Wanting to know if Holden produced rear offside bumper panel with 'cut out' to allow for double sided exhaust. I have heard that the last of the VZ Thunders actually had a double sided exhaust which had the required 'cut out' and hanging brackets. Not sure if that is fact or fiction. Any info relating to double sided exhaust fitment on VZ Thunder Ute will be appreciated.