Some European vehicles with double-sized openings require a special ";cage"; bracket for installation, but this bracket is not included with Pioneer double-DIN receivers.
This Pioneer ADT-VA133 mounting kit includes all you need, including a mounting cage, two side-brackets, rear-support bracket, trim ring, mounting hardware, and removal tools.
Trim Ring: Width = 7.405";, Height = 4.655";, Depth = 0.455";
Cage: Width = 7.325";, Height = 4.605";, Depth = 3.115";