When someone hit me from behind I had all broken "bling" replaced like for like. Took ages to find termignoni replacements but we got there.
As long as you're not to blame, you should be fine regardless of standard replacement, as it's the other party's fault. Even if you did have problems you would be able to use your insurance companies' legal team or can speak to companies that specialise in this area -
http://www.ridersupport.com - these guys were amazing and get other good reports on here too.