Voice coil is toast. You would have to recone it but its roughly same price to get a new one since skar doesnt offer vvx recones as far as i know. You may contact skar directly and see wat they can do for you.
The deck amp will usually distort before the rca output. They are seperate sources. Need to get those mids and hi's on a seperate amp. Deck power is garbage anyway. Only around 20 watts on most decks. A small decent brand 4 channel will really bring those doors to life.
Also make sure you use your crossovers. Most components or coaxils dont play low. I usually cut mine off around 50hz.
Anytime a game drops im curious about i watch gameplay vids and reviews on youtube to check them out. My wife seemed interested in it. I prefer a more open world game. Less focused on the storylines. Ive been waitn on fallout 76 beta to drop and for red dead 2.
Sorry didnt look at pics close just kinda skimmed. U could always run it under the car up against the bottom or cut some holes in the firewall. Either way i doubt youll ever see 150s without upgrading electric, more power, and sound deadening.
You could get another skar rp2k and run one to each sub wired to 1 ohm each. Just gain match them. Regardless u need to at least add 1 more run of 0 gauge to the back and upgrade your alt. Also sound deaden like crazy! Flex kills db. Also if you can fire the subs forward into the cab with port forward and seal it off from the trunk youll increase output alot.