Sorry, I was thinking of KL-ZE, but anyway, the FS-ZE has different camshafts and higher compression ratio, so ADR emmisions compliance could be an issue. Check with an engineer. If it's legal, then some of us might end up with FS-ZE swaps come rebuild time!
I read about an FS mated to a F25MR box ok when the owner found forged FS rods wouldn't fit his FP block.
If you want to replace struts and springs, the BC coilover kit is working well for me.
Bit sad having this trouble at so low kms