Upgrading my 2023 Ford Bronco sound system

I have a 2023 Ford Bronco with the base stereo, not the B&O model.
I’ve replaced the front dash speakers with Infinity Reference,
upgraded the kick panel with Focal 6.5 RCX,
and put in 6.75 Kicker 46CSC674 CS-Series speakers in the rear pods.
I’m thinking about adding a tailgate sub and some other items to my cart.
Do I need anything else?
Will this be easy to install?
Do I need to tune it?

I just installed a sub and amp in my Bronco 2D. I have a 2023 model and was using a fake amp and sub. I went to plugnplaykits.com and got the Kit 2. I plugged it into my head unit, and everything worked perfectly. There are other methods, but they looked way more complicated.

2020 And UP BRONCO & BRONCO SPORT NON Amplified Radio Plug n Play Audio Harnesses: Kits
KIT 2 PAC LPA-1.2 SUB CONVERTER WITH GAIN MATCHING CLIPPING LED

I think gate-mounted subs are not great. Just get a regular box.

Lennon said:
I think gate-mounted subs are not great. Just get a regular box.

I live in NYC and I’m worried about it getting stolen when the top is down.

Lennon said:
I think gate-mounted subs are not great. Just get a regular box.

I completely disagree. We install a lot of these in Broncos and Wranglers. They sound really good.

Logan said:

Lennon said:
I think gate-mounted subs are not great. Just get a regular box.

I completely disagree. We install a lot of these in Broncos and Wranglers. They sound really good.

That’s fair. I haven’t had much luck with them since clients usually don’t want to pay for good soundproofing.

@Lennon
We make soundproofing a must. My customers always agree to it.

Logan said:
@Lennon
We make soundproofing a must. My customers always agree to it.

I like your approach

Lennon said:
I think gate-mounted subs are not great. Just get a regular box.

What do you suggest? The audio in the Bronco is terrible.