With enough time, money and hard work, anything is possible. However, I'm not sure there would be very many things that you could take from an F and put on an R. I think I've read that even the lug bolt pattern is different.

 

If you like the R56 don't ruin it by sticking on F chassis bumpers (or anything exterior). I doubt it's possible/worth the money to make it possible and there's nothing really to gain by swapping anything. It's a completely different car and you'd need tons of custom work to make anything fit. The only thing that would be doable/worth it, is swapping the front seats. You'd be better off fixing the salvage titled F series, depending on what's actually wrong with it of course. The cost of a used F56 S starts around $10k, the cost of the salvaged F car + the cost of time/labor/parts=not worth it.
Body: No
Drivetrain: No
Interior: Seats are likely doable.
Tech: I doubt the comfort access can be swapped to a new chassis, BT would be nice but you could get that with a simple kit from Amazon, Nav-Use your phone.

 

They changed from 4 to 5 bolt on the F series.