3.5"-4" in the dash and 6"-6.5" in the front door. To remove factory door speakers, you will have to drill out the rivets. To replace door speakers, you will have to fabricate a spacer ring or find one to purchase (door is very shallow).
The 2005 Scion tC has 37.6 in. of front head room.
The 2005 Scion xB has 50.6 in. of front hip room.
The 2005 Scion xB has 46.1 in. of front head room.
The 2005 Scion xB has 45.3 in. of front leg room.
The 2005 Scion tC has 54.3 in. of front shoulder room.
The 2005 Scion tC has 41.6 in. of front leg room.
The 2005 Scion xB has 48.6 in. of front shoulder room.
The 2005 Scion tC has 53.2 in. of front hip room.
The front track of the 2005 Scion tC is 4 ft. 11.3 in. (59.3 in.).
The front track of the 2005 Scion xB is 4 ft. 9.3 in. (57.3 in.).
The 2005 Scion xB has front wheel drive.