Would anyone know where I can have a cold air intake or short ram intake installed? Same goes for the exhaust (catback) and muffler.

This is for my 2013 Kia Soul. Warranty is still until 2018 (lol), but I can't resist the urge to upgrade things that can increase my throttle response and acceleration. I couldn't find a ready-made CAI or short ram intake kits for my Soul, so I don't mind custom solutions. Nag-Google na ako ilan beses and I couldn't find shops except for Speedlab that offer these things. May ibang shops ba kayo na ma-rerecommend? They don't appear to have any web presence.

I'm also looking to upgrade my exhaust and muffler, but I would really like something that sounds quiet. At least as quiet as the stock muffler. I don't mind the change in noise but I want it relatively quiet. I'm just after the performance benefit. Then again, the free flow nature is what allows more power and noise right? I still want a reasonably good resonator that doesn't build much pressure. Is there such a thing? Additionally, would a muffler change alone provide enough of a performance benefit or should I change the catback exhaust as well?

P.S. I'm also planning some upgrades for my Swift 1.2. I'd also appreciate if anyone can direct me to good places for mild upgrades.

Any useful inputs will be appreciated. Thanks in advance.