On the positive side of things, you now have what looks like being the final answer to all the Brooklands exhaust system problems, the fix that it should have been in the first place if correctly designed. The owners that have this specification of Brooklands system have not experienced any further issues with it cracking, to my knowledge.
The only problem is the slightly reduced ground clearance of the mounts, watch out for speed bumps! You can justify this expense with the man maths that your limited edition Brooklands M3W, complete with sorted exhaust, will probably be worth more than the average M3W, if you should ever sell it.
