You can use uni-strut.

Uni-strut has t-nuts designed to work with but won't be hardened I'd prob try to use thin uni-strut and hardened T-nuts.

You'll need to be creative to attach the back to the car but maybe just drill new holes though the rail farther forward and use the same bolt right through the uni strut.

Paint it black it'll look factory. It will raise the seat 3/4" or so, so hopefully your eye height is low enough to deal with that.

When i bought my e53 one of the seat bolts was not bolted in completly and the moving part of the rail hit the bolt head going past so I'm pretty confident that rear bolt hole can be moved forward.

Put the uni-strut open side down, use a short bolt and t-nut to hold the front down and use the factory bolt if long enough to hold the uni-strut to the floor.

Dry fit to determine how far back you can go with the limit of wire length. Raise the seat fully and set on a couple 1x2 to account for the height of the uni-strut.

Should be an afternoon job. Good luck report back.


–awr–

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)