Exhaust trims 2012 R56

[Boogs]

My son has been dechroming his MCS, it already had the full JCW kit on it (ex demonstrator, so even has things on it that were not options) but the real give away is the exhaust tips. He'd like black or carbon trims for it, but I can't find any that will fit, they all need a larger bore pipe, as the stock MCS pipes are only 45mm diameter.

Seems this is my task for Xmas present. Any ideas?

Nb replacing exhaust is out due to insurance (he's 20).

Thanks