Re: bang for $$$$
I think the exhaust should be around the $1500 mark for extractors and system, cheaper if you go single 3". I got my Genie extractors and single 3" with stainless muffler and reasonator with twin tips for $1000, (mild steel pipes). I would also suggest getting it all at once it may save a little labour
FOR SALE...... $22,990
AUII XR8 (200kw), Silhouette, Body Kit, Hawk Wing, 5 Speed man, Premium Brakes, Premium Sound, Genie Extractors, 3" exhaust with twin 3" tips, K & N filter with air scoop, Polished Inlet manifold, MAF & 70mm T/B, T series interior handles & Gear stick ring, Chequer plate, Momo Pedals.