The best set up would be the Douglas 11" wheel with OMF reinforcing rings. This set up is by far the strongest you can get, and they will last forever. And they look cool to.
If you get them with out the locking rings it will save you some money.my buddy did a pair of locking ring on his xx and they turned out awesome it was about 390 for rears. and yes the stock 11'' is great but without the right tire you wont go far.
Who sells the Douglas 11" rears I have been looking and can't find them.