Anybody seen these up close?

[Hunter SS]

EXHAUST VE SS SSV SV6 HSV G8 PONTIAC SED DIFF BACK NEW - eBay Mufflers, Exhausts, Car Parts, Accessories, Cars, Bikes, Boats. (end time 23-Jun-09 14:05:24 AEST) :driving: they don't sound "too" bad on the video.....

YouTube - VE SS SSV SV6 TAILPIPES EXHAUST KIT BY ORIGINAL PARTS GROUP

I'm curious as to whether they are as good as they say.... plus they don't actually feed it a lot of numbers in the demo.