yep. most 10's are happiest with around 1.0 cu.ft. each, most 12's are happiest with 1.5-3.0 cu.ft.
but some of it comes down to the bass quality that you want. i need to feel the bass. messed up breathing, mirror rattling, bass. if i can't feel it, there's no reason to spend money on it.
if you don't need that kind of bass, it opens up a ton of options.
i have one of these in my ranger, because there's even less space to stash gear than there is in this car.
https://www.woofersetc.com/soundstre...amplifier.html
by my standards, it's horrible. it makes bass, but i've had to eq it a dozen different ways, and if i turn it up to even half the level i keep the sub in the car, it goes flatulent. if a normal sub is the equivalent of snapping people with a wet towel, this sub is the equivalent of snapping people with a paper bag-- all the same physical effort is there, but there's very little to show for it.