Here's an example of the design and engineering that goes into every PTUNING product. This is why it has taken so long for us to complete our FR-S/BRZ WMI System. We've literally taken hundreds of different measurements and have gone through multiple physical prototype designs to come up with a final design that is simple to install, simple to access, and ultra clean looking.
First three designs concepts:
Final design concept. Includes an integrated power and control module unit along with a billet aluminum mini battery tray holder: