Just found out some good news (more powaaaaaaaaaaah) and some bad news, it's a GTM stage 1.5 kit and not a Stage 1 as it was sold by the seller, so it needs some modifying and fabricating to be made to fit the UK RHD cars, the filter assembly it's in the steering rack area.
http://www.gtmotorsports.com/product.php?productid=17780&cat=258&page=1
iFabricate, it's over to you mate!