Grab a few mates and get your ass over to the 'Ring in 4 weeks with my lot - there's plenty to play with there!
Oh, and back on topic - I got thinking after your phone call last night about wheels and remembered this place.
http://www.motorcycle-exhausts.co.uk/product_info.php?cPath=502_519&products_id=4313My mate bought a Ti exhaust off them for his bike which they brought in straight from Italy much cheaper than anyone else was doing them... I can't remember the exact story as to how they did it, but I think they have links with some main supplier over in Italy and bypass the usual routes?
It's possible they can do the same with the 2021's, so they may be able to get you Mg ones in smaller quantities?
Certainly worth a phone call.