FMF slip on, should i get a head pipe or sparks??

[bad01300ex]

Right now ive got the fmf titanium slip on, would it be worth it to get a fmf headpipe or should i just go with a whole new exhaust, like sparks

[spanky101]

i like sparks sooooo my opinion is biased

[cjj]

go with a new sparks