Wiper arms 99 W900L ?

Anyone have any source or part numbers for wiper arms OTHER THAN KENWORTH for this rig?
I am sure KW gets like $100 a piece for these things and I think there are generics out there.

One of the holes that the wiper attaches to on the arm, broke and I want to replace both arms..

 

That's just stupidly priced, even for KW. I swear I saw a "Generic" brand....I will keep looking.
Maybe TRP makes a set that isn't a killer to the wallet.

 

KW sells a wiper arm and wiper for around $250 each. OMG.
But then they also just sell the wiper arm itself for about $95 each.

I looked at the difference and the ONLY difference is the absence of a rubber Anco wiper blade.
Well I can pick those up for about $8 each...

So, 2 arms...2 wipers and some new nuts came to about $220 total.