Yip DIY, I just used the jack provided, had to get smaller headed nuts though.... and a better spanner.
After you have run the car for about 30ish miles or so retighten the bolts, just incase any have loosened.
Drawings! It's a sat nav holder mate, not a bridge
Just took some quick measurements, then attacked a bit of MDF with a drill, jigsaw and sander. It a bit of a sqeeze getting it in and out, but tbh it'll not be out often.