Cheers mate I'm going to give regency park car inspection a call tomorrow find out rules and regs Iv just brought a cowl scoop but not real keen on the look for the Monaro but it's ment to be the easiest way to go for the law side of things definitely rather hornet look style just need to find out what the rules and regs are for the street something like this would be ok doesn't have to be to high 2-3 inches would be enough