Rear Brake Upgrade/Conversion Pros/Cons?

I have an opportunity to get some Porsche OEM Brembo rear calipers for a stupid good price. They are 4 piston (mine stock are 2 piston). The conversion kit is designed for an E46 M3 Details Here

Questions I have are
1) Will these fit a 2015 M235i (F22) ?
2) Even if they did fit is there any benefit ?

Thanks

Rear Brake Upgrade/Conversion Pros/Cons?