Well, you certanly can't buy new ones - not even repro. as far as I know - so careful drilling out of the rivets and some disassembly of the originals would be my first recommendation. I expect you'll be joining the serried ranks of other Speed Triple owners that are constantly on the search and lookout for original stuff to stock for the future. Daytona items of the same year/s will fit if you can find them.
