Thanks for all the great comments. Super happy with the way the system sounds. The imaging is perfect, the sub isnt overpowering.
Hope I can answer all the questions here.
The sub box was custom made. With so many Tacomas here on the island, my friend built a jig so he can make the boxes when he gets a customer with a Tacoma. I dont think he had to cut any plastic to fit the box in that space, if so it was very minimal.
The pushbutton start (its so sweet) is part of the entire alarm system. The alarm has a small transmitter that you carry so the truck senses when you are close so it will lock or unlock automatically. It also has remote start as well as a key pad on the window in case you lose the transmitter or lock yourself out of the truck. The transmitter also has remote start. The alarm is made by Dowontec, called the Alibaba model ALI-ST800.
I think the install for the pushbutton start wasnt too difficult, but all of the other wiring, sensors, keypad and antenna did take some time.
Took him 8 nights to do the entire install. Deck, speakers, alarm and led lights.
As for prices, sorry but I got the friend price hook up. The stuff is not cheap though. I think the alarm is the best thing out there right now. Im sure there are not too many Tacomas with pushbutton start. Maybe the 2014 model year.