will curtis sparks headpipe fit my fmf slip-on?

[n811]

I bought a curtis sparks headpipe for a 400ex( CHEEP ). but will it fit most slip on pipes? I have a fmf with stock headpipe. I tried looking on their website and looks like they only sell full systems.

[kfxwizzard400]

i really dout it will fit... most exhaust companys make there exhausts a specific way so you cant mix and match. This in the end gives you no choice but to buy there header or silencer boosting there business.