Seats and rear bench from SEAT Leon III (F5) to Octy III (E5)???

Hi All,

Have ever someone considered to put the front seats and rear bench from SEAT Leon III (F5) to Octy III (E5)?

I have an Ambition trim mounted in my Octy. Well, frankly speaking, it isn't the fancy-looking trim option at all So, I was looking at the used parts market in the hunt for at least an Elegance interior. Preferably with an alcantara or a partly leather trim, but the standard one would also suit me  And to my biggest surprise, the prices for O3 interiors are hitting the sky 😞 The O3's Elegance interior made of ordinary fabric can be more expensive than the partly leather Leon's FR one. I'm shocked >8-[   ]
That's why I came up with the idea of putting Leon's FR seats and bench to Octy III. What would you say about it? Will they fit?
I'm quite sure the front seats will fit "plug and play". My biggest concern is the rear bench with backrest. Perhaps someone tried such the mod and is able to give some tips and tricks? Any help would be appreciated

Thank you in advance.

BR.

Maciej