Cheers guys. Tips I got from Euro Spec when I searched for Ti tips via Google. OEM seats weighed 22kg each (fronts).
A few more pics of the seats in daylight:
Excuse the crappy shot!
Since this photo I've dropped the seats one notch down at the front (you can make out 3 holes in the photo) and the back of the side mounts and I'm sitting a lot lower now which feels a lot better (to me).
View from the boot. Those huge stickers are FIA stickers which I'll leave on for now.
EDIT: Oops. Posted under my fiancee's account :lol: