best place to get info/pricing for Sparks Racing?

[bigfoot300ex]

where can i find some pricing and dyno numbers for a sparks exhaust for a 450r
there website doesnt really help

[Silverfox@C&DRacing]

I don't have any dyno #'s just seat of the pants we installed the sparks on our 450r and it make it a completely different bike, before the pipe I didn't think it had much bottom with the hrc kit, my mind was changed when we added the sparks pipe :)