I've got a Fujitsubo one on mine, came on the car from Japan actually, meant to be a very good header too and it's got plenty clearance, clears my H-brace by about 10mm or so
The copy ones make power, but when you consider the crappy ground clearance you'll think otherwise, esp. after you smash it flat. Otherwise a true hytech is $1200 usd to start or roughly $1400-1500 after it takes a boat ride from America.