this is just a suggestion (easy and maybe cheap):

take ur subframe-LCA bolts (ones that holds the LCAs to the subframe) and bring one to bunnings, find bolts that are the same size but with longer threads (roughly 0.5-1cm longer)...if not then u have to find a company that manufacture custom bolts...

just out of curiosity, why ur ASR package doesn't come with bolts?