As nice as the filters look, do you think they will sap performance a little as there doesnt appear to be much space for air to get to them...?

 

What you have there is a HAI ( Hot Air Intake ), no good at all, and I sincerely hope the internal filters have been removed.
If not, then you will have a really small quantity of very clean hot air to the throttle body.

The way to go is a single or dual CAI ( Cold Air Intake ), the N/A is perfectly happy with the less expensive single.

see Performance auto parts & aftermarket auto accessories for your car, specializing SRT4, Crossfire SRT6, SLK32, C32 AMG, VR-4

or build it yourself as a DIY :
look at any post by maxcichon

As you see below, mine is a single CAI from NeedsWings .....