I have some cheezy short ones on mine to clear the bodykit( maybe 8inches). I dont know what brand I have. I know Hedman makes all kind of measures to please everybody. Dont know about the quality though. Maybe somebody else that has them will climb in and give a feedback about them.
the easist thing to do is go to your nearest exhaust installers and pay them to put some tips on for oyu. I know it cost money but its a simple thing for them to do and it will save you time and money in the long run (rusting tips, poor welding. . etc)