I didn't have the required drill bit/saw. I heated a penny red hot on my grill burner and placed it on the dust cap. Got a neat holeThe biggest trick for installing the Morimoto kit is that you will need a hole saw to drill out the dust caps so you can put the rubber extenders in. I detail it in the above mentioned thread. If you need detailed instruction as to how to drill it out without messing up your dust caps just let me know and I'll put something together.
(and this thread reminded me to do an update )