I don't know if you're getting it off eBay, but be careful of eBay 'bargains' on Brembo radial master cylinders, you find people paying up to £190-200 for them when you can get a 19 x 18 one from
Red Racing Parts for 230 Euros which is about £155 at current exhange rates.
I was going to buy one from Harris at the NEC last week, cos they were doing them for about the same price - until my mates convinced me that it would look out of place on an 888