Oh OK, so the Termi's actually retain that collector. I was under false impressions. I'm not looking for much power improvement, I just want the noise (and now, symmetrical cans). I have been considering chop/coring the cans since the Termi's seem to always be a bit too expensive for me.
get these...
http://www.desmoworks.com/index.php?main_page=product_info&cPath=405&products_id=483
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I have them on mine, they are really light at 4.5lbs each, fit nicely and are very well constructed. And titanium is much sexier than carbon...