I contacted a local muffler shop of mine about Lukey LR2779 and they said it'd cost about $200 to buy let alone installation and tips.

They recommended I buy a straight through muffler from them with chrome tips, $180 installed. THe guy also said the Lukey mufflers are to barky.

opinions?\

The muffler place is called Sureflo.
http://www.surefloexhaust.com.au/frame1600x1200.htm

Any other recommeneded places near Campbelltown

I'm very happy with my Lukey - cost was $380 fitted - includes $80 for a fancy dual tip and repairing a hole in the exhaust just up from the muffler.
Sounds a little odd, but mainly only when topping 4500rpm and probably due to the tip I chose. Quite comfortable to cruise around and talk to wife in the front and two kids in the back with the very soft cruise noise. :)