I honestly wasn't even aware there were subs in the car already haha where are they?

Hey what's up guys kinda new here I have a 2004 Vibe with the Moons and tunes package, I have a JBL 10 inch sub that I'd like to hook up but I'm COMPLETELY lost haha I'd love some help. Can the amp built in with the moons n tunes handle the JBL (rated 275 watts) Will posts pics of my vibe soon thoug...

I hit 137ish in my '04 4 cyl