e30 with e30 m3 rear seat seat belt idea?

[iwantspeed]

Hello guys
I recently purchased an e30 m3 rear seat
and im wondering what are my options for rear seat belts so that they will fit in the seat back seat belt recepticals.

[B Randon]

get the ones from the m3

[monty23psk]

I have this in my car. The OEM fix is to drill a hole just like the ones that exist, place a nut and weld it to car. Then treat it for rust prevention. This is OEM for e30 M3 but requires you to remove the rear subframe to do so. Other option is to get custom belts that are longer and use an existing hole but then the anchor point is off. So for looks it is ok but for safety, it won't work. I decided to make a bracket that looks like steps on both sides _--_, to mount to the 2 exiting holes and then drill a hole in the middle and use one of the existing belt receptacles to make is work like OEM. the bracket is thin metal so it is not the best but gives me more safety in the meantime. I have an e30 m3 suspension and will do the correct OEM install when I do the swap.