Bro, this seems to be chinese product, but price seems justified, my suggestion is to install it in 1 X 1 sealed enclosure to have accurate and punching bass, also space will be utilized properly.
for that you need to have a 2 channel amplifier and use it in bridge mode.
also witing from battery to amp and RCA connection from headunit to amplifier and thats it.
box shud cost less than 1000 and wiring max 1000, dont forget to place an inline fuse with power line coming from battery.
you can do it urself, else, installer will charge you 500 for this 45 min job max.