I'm sure you could rig them up to fit in the holes if you really wanted...Damnit, i only have 6x5s :/
Mine is still loud. I don't have many other cars to compare it to around here though, nobody has anything near as loud as mineNow im just worried about how 15" will sound in there. Being completely sealed up (besides the 3 speaker holes) will probably hurt volume a lot
I'll probably remove the deck speakers (theres a third one cutout already, ill just remove the insulation) for the airflow i need. In my bonneville i only had 3 holes for air to go through anywaysMine is still loud. I don't have many other cars to compare it to around here though, nobody has anything near as loud as mine