Trek rail rear shock upgrade ideas please

[HeyHey]

Came across a chap on good old Facebook who said he has fitted eyelet 230x57.5 Rockshox Coil to a medium Rail no issues (stole his photo as well)

He may even be on here???

I don’t know what to believe or who i can trust anymore….. View attachment 151515

That pic doesnt say much. It is when compressed and forced down (to take away flex) you can se if it really fit.

Should be okay to trust the pros at tftuned?