yeah i already took my back headrests off. so if i dont wanna abstruct the port would the same go for the subs as well. if i had the port above the seats i would have to do the sub behind the seat firing at it. If i made sure that the subs would not hit the seats or rub against them would that be okay.
if i did this deisgn i would have to keep the the angled sides, which i dont mind because it would make the depth less giving me more extra room in the back.