There are a few members on here currently selling authentic Holden parts. May want to contact one of them to see if they have any recommendations.
2009.5 SBM GT: Lots of show with some go.
The garage queen.
2008 IOM GT: Some go, working on the show.
The daily driver.
2004 Blazer Xtreme: Lots of go.
Sold and will be missed.