Do you currently have the OEM system fitted or aftermarket... We have a few aftermarket systems listed on our site, the Cobra and Scorpion are great choices - http://cougarstore.co.uk/index.php?main ... cPath=1_10
Very nice, they'll look stunning on the UY Zed... Tyre sizes sound spot on and you do have the option of going 10mm wider on the front and rear to 255 and 285 too...