Fitting 60/40 Bench Seats in 110 CSW

Please forgive the seemingly stupid question. I am still new to Landy ownership and trying to figure it out.

I just bought a 60/40 bench to replace the three high back seats in the middle row. The problem is that the seat brackets don't line up with the new seat frames. It seems obvious that I should just relocate the seat brackets but the brackets I need appear to be different than the brackets currently in the Landy. Some of the brackets have two sides - one for the outer seat and one for the middle seat. I obviously don't need this.

What's the best way of fitting new seats into my Landy? I've tried some quick google searches, but came back with nothing.

Thanks!