You'll need to gang up a bunch of alternators and batteries. This picture shows a whole bunch of batteries. You have to be careful about acidic battery vapors.>>25760443>Only reason I dont have them is the shop refused to put them in my Fiesta.
The reputable shops familiar with power audio would also refuse to install it until you replaced your windows with customized glass that won't break. This is why people install in transit vans. They can make a chamber strong enough to contain and isolate the force so that it doesn't destroy the rest of the car.
There are sad cases of people who didn't construct enclosures and allowed the car body to be the enclosure. In some cases, the paint vibrates off of various seams in the car.