hey i just picked up my G35 and im looking around for parts. currently im looking for a good CAI, Lowering springs.

I have the stillen full exhaust getting shipped now, what are good companies for CAI for this car its a 05 5AT. Also i have found Tein S-Tech Springs are these any good? Is the ride on them good or going to be horrible. And will i have to upgrade my struts to put them on?

Next summer she is getting the stillen stage 2 or 3 supercharger.. cant wait!!

But please give me advise on some spings and cai.

Thanks in advance