Correct oil drain plug for 72 Challenger

As the title suggests.. I'm looking for the correct replacement oil drain plug for a 72 Challenger with a 340.

Only reason I ask is, year one has a few listed and without taking mine out it makes it a little difficult to figure out which one is correct.

Drain plug

My initial thought was that it is the one labeled as FW90, but wanted to check here.

Thanks!

Call:

http://stevesparts.com/partscars.php

IF he doesn't have one he may know where to find it.

It looks like the FW90 not exact but real close. NOS ones pop up on ebay once in a while.