Winters quickchange question

I've got a new winters quickchange that I'm putting under my car, I was getting ready to put the axles in and noticed that one is a 1/2" longer than the other...do these have a long and short axle like a 9"? If so which side is which? Thanks for the help.

 

http://www.wintersperformance.com/2010%20Street%20Rod%20Rears%20Catalog.pdf

Check out the note in red at the top of page 7

 

Thanks Striper, funny how blind you can be when the answer is staring you right in the face! This place never lets me down though. Thanks again, Tim