oversized headpipe needed

hey i got a cobra silencer and i need an oversized headpipe to get it to go on right.. anybody have a header i could buy cheap or have.(cobra compatable) 300ex

[quadfamily]

Powroll sells one. I have one on my 300EX and it's nice. I think the price went up to $100 after I bought mine though. The pipe works with stock silencers too.