http://ultrahitch.rpmsolutions.biz/index.cfm?section=73
Central 4 wheel drive has about the best price on these
http://www.central4wd.com/category.aspx?page=id|29846
We use these hitches. They are kind of spendy, but they work well
The 10" adjustable drop will work fine for about any trailer behind a stock
height H2.
Depending on the length of the trailer tongue and location of trailer jack, whether or not your spare is mounted on the rear, you may have trouble getting everything hooked up.