I had one. Ba xr8 mk2 and I loves it didn't handle very well like the 6t but u cant beat the noise. Holdens have a tinny sound. Not much down low but cams , exhaust and tune they go pretty bloody good for as u call it a (boat anchor).
I just really liked the sound of the (kenne bell) bloody auto spell before. Watched a lot of u tube with the mustangs and a very nice bf mk1 I think in the xr5 orange. Just sounded awesome. But the price I got quoted I should have really shopped around but really happy with the turbo now. Wouldn't go back to the v8's but miss the sound a thing the turbo will never have.
I got a quote in sa for shy of 15000 for a kennen bell setup. That's installed and injectors and fuel pump. That's why I have a turbo now. A lot cheaper to play with.
Kennen Bell massive bottom and torque but not much up top. Cheapest and money for value get a v2 from capa. 7400 for 8psi kit with injectors and intercooler. Kennen bell set up looking over 10000 Easley without anything else. I looked at them some years back just sold the 8 and got a turbo.