thanx for the advice guys;
what would be better...pioneer hu or alpine??(the one im looking at jb has the alpine hu for $298 n the pioneer over 300...) is it hard to diy change/replace the hu in a dc5r as jb hifi charges $80 flat rate for installations...
Also, any suggestion on any good mufflers to buy (NOT loud, decent perf/price, good sound...) and where to buy it in melbourne?

Thanks