You're getting ripped off on ebay.
http://www.ledunderbody.com/in...D=137
Go straight to the source and it's $10 cheaper.
These look like they fit into a stock style h9/h11 plug. Thus no drilling is required, but you do lose your fog/low/high lights, which ever spot you choose.
You could drill holes so they are an "extra" thing, but they do not look like they hook up to factory harness. Looks like you have to route power yourself.