Hey, that looks unsafe.
The shoulder belt hard point
must be at or above your shoulder else in a crash event the direction of pull of the belt tries to compress your spine.
Ungood.
Here's a Schroth page allowing a 20* drop; having worked in the belt industry for over a decade I would prefer it to be either level or above the shoulder, but Schroth know what they're talking about.
http://www.schroth.com/installation-instructions/en/index.html