Yeah, standard you will be fine. SS exhaust or similar and they may do you on drive-by.
Personally, after the way I was treated there last year, I won't bother again. They really have an attitude problem for some reason. My car had a std exhaust back then. When checking in for static noise test the bloke doing it said "You'll pass this alright but we'll probably black flag you later on drive-by because these CSL's exhausts are all too loud". I was a bit taken back by this and told him it's not exhaust it's induction noise and the cars totally standard. He then came back with "don't try and fool me son, it's exhaust noise and they are very loud, I know these things".
I thought, OK, that's not even worth a response and let it go. Then in the briefing, the guy started saying stuff like "watch out for gaggles of CSL's hogging the track in groups".
Then I got cautioned for getting the tail out on one or two corners. WTF is that all about?? In my last few laps of the day I was powersliding every corner I could manage and got black flagged at 4.30pm. Didn't care and was on the way home anyway.
Sorry about the rant. Still pisses me off!!

Can you tell.