anyway guyz... i was wondering is it ok anot with this setup... so trying to seek opinion... im driving a 4g18 waja(A) so wat im gona do is use zenden 4-2-1 extractor and replace the CAT with zenden extractor and the muffler use tanabe sflow muffler and the pipping im gona use stock.. btw.. can anyone tell me where to find the tanabe muffler in subang/sunway/kl or watever place la as long as its near subang area... so do give ur comment...