box help needed for 95 ext cab chevy truck

im building a system for my 95 silverado extended cab truck.ive got focal k3p upgraded comps 2 ppi art series 600.2 amps 1 for the front stage and 1 for the subs.eclipse 8053 hu.now i am in need of a sub or subs enclosure to fit under the rear seat without having to take the rear seat out. modyfying it is fine as in raising the rear seat higher but i want the seat to stay in.what box or what size nice sub/subs can i get under the rear seat? i was hoping that i can get 2 jl 10w3v3 or 2 idq 10s or 2 focal 11s under the seat. is this possible? is there a box already made for this?