Questions about my 2015 Charger R/T

So I recently traded in my 2013 Charger R/T AWD for a 2015 Charger R/T. Needless to say I have a couple questions.

The headlamps on my car are described as Bi-Halogen projector headlamps. Are these HIDs? I noticed the light output is more of a yellowish white rather than the bluish white on my 2013.

My car has the 3 piece low profile rear spoiler. I am wanting to replace it with the Hellcat spoiler. How exactly is the spoiler attached? I'm going to guess with adhesive and maybe some bolts, but if someone could let me know exactly how it's attached I'd greatly appreciate any help.

I'm loving the car so far. Still getting used to the exterior design. When the 2011's came out I didn't like them and I ended up buying a 13 as they really grew on me, the same has happened with the 15s. I will say the factory tune on these cars is much better, throttle response is better out of the gates, and having Sport mode available to disable MDS is awesome. I'm pretty impressed with the car overall so far.