First of all can an exhuast designed for the Altezza RS200 be used on the IS200 1G-FE ? and secondly i looking for a jap style exhaust for my IS200 thats not really loud and quite subtle or even not too much louder from OEM, any suggestions for any ? or would i need go custom ? i had remus on my old mazda even though that was quiet the fuel consumption deteriated + exhaust weight was heavy so thats a no & a universal HKS backbox on my old corolla looked good and sounded good but was loud, now i changed my ways i dont want something loud ! thanks!