ive seen a flow chart somewhere. they where so close it was unreal. i think the exploere made a little more TQ and the cobra made like 2hp more. but it ws ridiculously close. id go with the explorer if it was me.
Your sig says you have a gt40 intake not yet installed, if so I would choose that over the cobra and the explorer intakes, if you don't have the gt40 I personally would opt for the explorer intake, they are basically the same thing And it's cheaper, then you can gasket match it and do some port work to it to make it even better. I think the main differance is that the cobra requires no egr spacer.