Gen 4 vs Gen 5 calipers

[vintec]

Hi all, been lurking the site for a while now. I've got MY11 Forester (SH9) and looking at Liberty GT brakes upgrade.

All I know is Gen 4 and Gen 5 LGT have different rear rotors (170mm vs 190mm handbrake), am I correct to assume the calipers are different too?

I've check subarupartsdepot.com for part numbers but ended up with more confusion. These are the comparisons between Gen 4 and 5:

1. Identical part numbers for front rotors, very straight forward.
2. Different part numbers for front calipers but they fit the same rotors.
3. Can't tell the difference without having dimensions of the rear calipers or have them side by side

Also found out that Gen 4 and 5 have different front pads on DBA online catalogue so I have no idea what to make of it now x_x

Are there any difference between these generations, front and back?

Cheers,
Vincent