I would put money that regardless what car you compare the 185 is going to look better on the dyno. They all do, but dyno's don't factor in the air being sucked in at 100 mph and hp gain from it. It also won't show taking that extra air, increasing boost and afr's at above 5800 rpm.

Your decision depends on what your after. Low end stop light to stop light or mid-top end freeway runs. Also remember unless your planning on high dollar summer tires or drag radials modding beyond a tune and cold air intake will light the tires at will rendering that power useless. Sideways comes pretty easy. Again this is from the SRT6. PM JTurkel for the best setup that fits your needs. Good luck.