Noyce! Sounds awesome, but you need to idle that motor up some. $50, can't beat that.
It would be easy enough to get a good flat black finish on those cans with just a little bit of work. Get somebody to beadblast them, then wipe down with alcohol and prime them with high heat primer and then some type of flat black high temp paint.
I'll bet they're a lot lighter as well.
I actually have access to a variety of media blasters at work so maybe that is something I will look at. As far as the weight, I was shocked at how heavy the stock pipes were, these are significantly lighter.