Not sure if this has ever been a topic around here,
but the zx14 is very vulnerable with the way that the drain bolt on the oil pan is facing straight down and besides the small guard is the lowest point on the bike's belly.
I've seen countless horror stories of people ripping the drain bolt on speed bumps, riding two up, slamming down hard from wheelies etc.

Here's a link to the Classifieds on Bikeland, Shane has some bolts left and I highly recommend going this route as a safety precaution. Shane is a great guy and the bolts are really cheap:

http://www.bikeland.org/board/viewthread.php?FID=3&TID=52426&set_time=1264558278

Hope this helps