nice one another astra 😃
welcome along mate cheers..
theres loads of things that you can do, just depends how deep your pockets are dunno..
but generaly people de-restrict the air box
fit panel filter
widen inlet piper
fit veccy c piper
cat bk exhaust
vocky's fpr mod
and the 2.4 mani
then it goes to bigger money
cams
porting
etc...
hope that helps