Anyone know if it's possible to modify the angle on cobra seats ?

The things lean way to far back for me and i'm wondering what i coud do to modify the drivers seat other than using a cushion behind my back which does work but also looks a bit daft.

You can modify angle if you have mounts like this:

or


If not - you have to fabricate new brackets/mounts... or drill new holes :)

No just straightforward runners. It would be simple enough to use spacers and longer bolts to change the angle between the floor and the seat.
What i'm looking to do is to change the actual angle between the seat base and seat back- trying to find out here if anyone has been able to modify these seats by taking the cover off and moving a couple of bolts, cutting out the fixed joint and welding in an adjuster mechanism, bending the angle with a large bar etc ?

Grand Scenic has two dinky little seat in the boot complete with headrests and its own mounting brackets,not adjustable.