I would go with silicone hoses and drop in k/n air filters, but I noticed on the z1 intakes they prefer the JIM WOLF CONE POP CHARGER STYLE FILTER.Now it may be worthwhile looking at the Jim Wolf kit and if you feel you are not getting enough cool air, maybe add air inducts on the front bumper, but have them lined up correctly.
I have the above but are awaiting a deal on hfc,s before I tune the car, then on my tuners advice might try the idea above as there is no steel tubing at all, just silicone.