its caused by moisture trapped in the brake fluid reservoir.. as the fluid get hotter it expands so no brake light, just change the brake fluid, fill it with new brake fluid.
Don't get OBX it's junk! doesn't compare to Quaife
Get OEM, it's just a couple of bucks more than the OBX.
I have a spare ITR LSD.. but don't know if I should sell it. :roll:
Yes its possible to install a front wheel stud without taking the whole hub apart..
If you searched I wrote it some days ago:
http://www.clubintegra.com/board/showthread.php?t=18092&page=2&highlight=wheel+stud