Found a Whiteline "Factory Second" page.
 

I hope this is not against any rules...

I was messing around on Ebay and came accross a seller titled "WhitelineSalesOutlet". It appears to be "factory second", or blemished Whiteline products that they sell directly at a discounted rate.

One item they have listed is a front arm/chassis brace for the twins. Price seems very good for a Whiteline product, check it out:
http://www.ebay.com/usr/whitelinesalesoutlet

The reviews are all positive, but there really aren't that many of them.