I have a question

I have 2 Rockford fosgate p2 12s in a box made for a trunk sitting in the back of my extended cab 02 Silverado in the seat. Would it be better if I have them on the floor level instead of on the sit? I feel they would have more air to breathe.

I have 2 Rockford fosgate p2 12s in a box made for a trunk sitting in the back of my extended cab 02 Silverado in the seat. Would it be better if I have them on the floor level instead of on the sit? I feel they would have more air to breathe.