Chris Astley does genuine Mahle in 86.0 / 86.5mm for 425 quid a set delivered.
01257 262 565

They arent listed on his website, but just say Chip mentioned them if he asks where you got the price from.

If he hasnt got any then my other mate Steve does them for around 450 and will definately have stock, he is on here as "steveboyslim" if you want to drop him a PM, he'll also machine them for a different CR if you wish, although obviously there is an additional charge, not a lot though normally.