Hey guys! Zach here, I wanted to get some opinions on some design ideas. I made a business when i was 18 building boxes and all kinds of fun fiber/plexiglass enclosures on boats/cars/homes for a couple of years and want to put my experience to back to work now that I am out 1 year out of college. I have a 2013 dodge ram 1500 sport (60,000 miles) and if anyone knows anything about the dodge is that under the backseat is a death pit for headaches with building a box. I plan to do one of two options due to this issue with the truck:

1. I am going to go under the seats and cut out the undercarriage of the truck to drop down a couple extra inches, and weld back a nice square insert to put a much larger box into the truck allowing the space for larger magnets and more airspace.

2. Depending on how much of a pain that will be, I will then decide to just do an average blowthrough. Designs for the blowthrough will be restricted to only the first 2/5 of the bed due to my need of other random stuff. I would also like to build this in such a way that I would be able to remove it should I need to use the entire bed of my truck.

My question is simply, has anyone seen any attempts at dropping out the floor to allow for a large box and high powered system that is firing up under the rear seats. That and how it could compare to doing a blowthrough setup firing forward. Budget for subs/amps/batteries/materials is somewhere between 1500-2500, flexible +1000 (maybe? -options). Thank yall in advance for any input you have to offer.