Cadillac CTS-V - Want to install my sound system few questions

I have a 10" sub, with amp

I have front components

I'm wondering what I will need to keep my stock radio, and run everything.

I couldn't find anything via search. Just looking at what directions I can go

Does your amp have high level inputs?

I have a separate amp for the components too sorry, two separate amps. I can't remember now if it has a high level output

well, i would hope your amp has a high level output. otherwise it's a brick with RCA inputs.

you can splice your substage directly into the HLI on your amp, if you have one. The best thing that I'd ever installed was the LC2i (http://www.crutchfield.com/S-wvladPAjzfF/p_161LC2I/AudioControl-LC2i.html) it has a remote out, and extremely precise bass measurements. I plan on getting one when I throw a 10 in my car.

Do you know the model # of your amp? If so I could look it up and tell you the best method.

well, i would hope your amp has a high level output. otherwise it's a brick with RCA inputs.

you can splice your substage directly into the HLI on your amp, if you have one. The best thing that I'd ever installed was the LC2i (http://www.crutchfield.com/S-wvladPAjzfF/p_161LC2I/AudioControl-LC2i.html) it has a remote out, and extremely precise bass measurements. I plan on getting one when I throw a 10 in my car.

Whats a substage?

subwoofer and amp