i am very familiar with aps, ive use all of aps's products on my sti, and my brothers has the tt kit for his vette. love those guys, never had any issues.

as for sts, yeah it looks like some backyard built kit, and i know two guys that have a it, one has a chevy truck the other with a ford truck, both deeply regret it, they both had it professionaly installed and still have had nothing but boost leaks and fitment issues, plus the lag is HORRID.

juuuust my opinion, i vote nay to sts