If you're talking about a sway bar for your TV's rear suspension, try 4Wheel Parts. They do a lot of truck suspension mods and have probably seen lots of trucks like yours. They have a couple of locations in the Seattle area.
Regarding setup of your Eaz-Lift, check with the AS dealer in Covington. Since they didn't sell you the hitch, they may be reluctant to do the setup, but they can probably refer you to another RV shop that could help.
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Like the tortoise, travelin' slow with the house on our back
2012 FC27FB "Ted Zeppelin"
2010 Tundra Crewmax Platinum "Silver Rhino"
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