Maybe this is already common knowledge (I didn't do a search before posting this) but...
FYI, I don't know if they're made under contract by TracRac or not but the stock H2 bars are pretty near identical to the popular TracRac pickup rack systems, which means the tie down slides fit perfectly in the grooves. For those of you who use our racks to carry stuff on top, that means you can pick up these little ditties for about $40/pr to make life a LOT easier for carrying lumber and such on top.
They make all kinds of other junk too like bike carriers, kayak carriers, blah blah blah at prices I would guess are way below what Hummer dealers are charging for similar OEM accessories.
Wish I'd known this all along....
-J