I'm happy with my COBB dp and custom 3" stainless to magnaforce. Lumpy and gurges and chug chug chug under load. Did break a hanger like lachlan, but that was from stress of flex from changing turbo over a being a bit rough. I am happy with my sound and not too loud! Any exhaust with cold start sounds like a boat lol. Customs are cheaper than premade by about half and remove shipping also. I got my full exhaust for $800 fitted (as I said all stainless including bends, muffler and tips). I would go with a downpipe that is premade and wolf and mpsg have some in stock. If in brisy though, yeah 2xs I hear are good and nothing really else in bris!
2010 Gen 2 - "SPOOOL" (VIC) - Fully bolted
CORKSPORT TURBO | COBB AP3 | COBB DOWNPIPE | COBB REM | AUTOTECH HPFP | CORK SPORT 3" PS MAF INTAKE | COBB SF AB | CPE TMIC | CPE HEADERS | COBB 3 PORT EBCS | 3 BAR MAP| PEDDERS COILOVERS | DBA T4 SLOTTED ROTORS | CORKSPORT EYELIDS| FORGE V1 BPV| | MAGNAFLOW CUSTOM | VELOCITY RED | PEARL 2PAC STOCK RIMS | DUAL TUNED BY HPF ON E30