300 and 310 cupras, golf gti clubsport, golf R, audi s3 have the same engine with same turbo. The difference is only software.
245 cupras, octavia vrs and golf gti - different turbo, don't know about the engine. It's EA888 gen4 too, but might have weaker head or rods, but probably the same as in 300+ versions, don't see why VW would waste money on two different parts for 55 hp difference.