I am looking at newer G37s/Q50s/Q60s but I realized that for much less, I can add an SC to my 2008 G37, not to mention it is impossible to find stick shift Infinitis anymore. It has about 140k miles on it, would I blow up my engine? What should I expect? Is it a bad idea? If I did install it what would be the first thing to break/blow up?

I am probably going to buy Stillen exhaust and CAI would those be compatible with the SC if I did install it in the future?

Thanks for any info or advice on what to do with my car.