many moons later...
i bought a Bride bracket with rails and a Recaro Base Frame, both LH or driver side here in the US. so far just from general impression it looks as though they bolt right on.
Ill update you guys soon enough. Hopefully i can find a bucket seat that will fit my needs.
Bride underside
Bride top view with free Cedric seat belt
Bride sticker
Recaro Base Frame
I honestly don't know what im going to do with this "Base" Frame" seems useless without the rails
anyway ill keep you guys posted!