Having a 'dual exhaust' on a 4 cylinder won't really net you a quieter exhaust. Exhaust will always favor the shortest route. Yeah, a little exhaust will go the longer route, but your shortest path is going to get the most exhaust through it.
You can get the FS Stealth exhaust, but you could always buy a resonated exhaust with whatever muffler & that will be about the same & may or may not be cheaper depending on your connections. I'd recommend going the stainless steel route with whatever you choose. Its going to last longer than aluminized steel, which will rust out much quicker than stainless.
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