Originally Posted by Dirtdrop
It's a very siimple job. The existing hole is the correct size. There is no drilling involved. You just run the tap throug. Send it to me and I'll tap it for you.
+1
I've done it to several sets of cranks. It's no problem as long as you have the correct taps. Make sure you use some good lube though so you end up with nice clean, smooth threads.