Thoughts on fmf powerbomb header

[03warriorrider]

I want to hear some of your guys' thoughts on the fmf powerbomb header. It would be for a 450r, right now motor wise its stock. I was looking at the yosh trc exhaust and want to know basically if it would be a good compliment to the slip on if i run the two together. Also will it even work with the yosh. I'm looking for some more low-end torque but i don't want to be loud, another reason why I'm looking at the yosh. Also the header supposedly lessens the sound output so that would be another benefit.

So what are you guys' thoughts?