unfortunatley anything 'performance' enhancing for the micra is expensive, thats why i upgraded, all of my setup, with roughly 50mm larger vented disks inc brand new mintex disks and pads cost me around the £100 mark, and now i get far better and more efficient braking with no fade what so ever, just i a guess id say just your disks cost more than half of that?
no the k10 and k11 inlets are different,
a while ago i made up a custom k10 inlet manifold with cbr600 carbs on, worked really well, ran spot on, i solt them to a member called 'whipit' who never fitted them and WAS selling them on, now to my knowledge he still has them so give him a pm. but really you would need a 4-2-1 exhaust to go with it, i have one of those for sale. thread is >>here<< bike carbs >>here<< if you click the link in my signiture theres a bit about the carbs on my website '8 valvers'