I’m not sure of exactly what you need but when I put different seats in my S2 Exige hanger111 had the passenger seat mount and s conversion kit for the driver’s side. They may not be what you need but Marion (I think), knew what I needed. Worth a call.
Are you planning on adding the inertia reel belts back in, or are you just looking for hardware to mount 4/6 point belts?
If you are aiming for the standard setup then you could view all the parts on the Deroure website.
Watching this with interest, when my harnesses go in I’m really considering binning of the 3points. The bonded in fixing for the lap belts really makes me nervous as it is, and the elongated fixing to allow both 3points and harnesses in concurrently can’t be helping.
I’d rather a bit of inconvenience whilst driving, as clambering into this car is a bloody event as it is - a bit more grief can’t hurt.
Ok, I understand now. Yes you will need a new subframe for the passenger side seat in order to fit the harnesses properly, as the standard one doesn’t allow the double sheer fitting as per the drivers side.
As Tim mentioned if you speak to Marianne at Hangar 111 pretty sure she will be able to help.