You don't - you replace the drain plug with one of these:

http://www.quickoildrainvalve.com/v/..._vs_nip320.jpg

Available here: QuickOilDrainValve.com - the best way to change oil

I have the one with the nipple on my Z and it works great!

Yep, that's expensive. I get mine (OEM ones) for $.59.

:iagree:

Absolutely, it is not a bad idea to shop around. If you can find a better deal somewhere else, take it.

I hope it doesn't break off should the car ever bottom out or if a piece of rock or road debris passes underneath...

Fomoto Valves are great, they are held in by a little spring and a ball stop valve basically. I just don't trust it, I work with WAY to many valves and seen them all fail. Its just to much of a chance for me.