of you want to spend a little money you can get a dedicated wok range.
plenty of heat.
American Range ARWR-J16| Wok Range Gas| 8in
Wok Range, gas, 23 tip jet burner, 8" high opening for 16" dia. wok, stainless steel front and sides, s/s tubular legs w/adj. feet, 125,000 BTU
http://www.suitesupply.com/wok-range-gas-23.arc-arwrj16.01.htm#gallery