These are the ones I want - or similar. Would need a longer front leg, but raising the kettle a few more inches is a priority for me. Might have to give it a try. http://www.ebay.com/itm/NOTE-c-1970-Pair-of-Official-Soap-Box-Derby-Wheels-Used-on-Winning-Entry/281158671930?_trksid=p2047675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D11%26meid%3D1188665477593338827%26pid%3D100011%26prg%3D1005%26rk%3D3%26rkt%3D5%26sd%3D400565723523%26Sorry - Can't grab the pic right now...
Plus you'll still have leftover if you want to make another grill taller or just need a spare front leg.