I'm interested in buying this back box for my 1.2 cilo and wondering if it would be easy to fit or would have to get a garage to do it ? Or any other complications ? http://sniperexhaust.co.uk/shop/clio-mk-3-12-2005-2011-c-3_72/renault-clio-mk3-12-sniper-back-box-race-can-2005-to-2011-p-212.html