R54 Accessories

Hi,

I recently bought a 2004 Mini One (Love it!) which I think is a r50? I am looking to buy some stuff for it although I've seen most of the accessories for R54, R56 Mini. I was wondering if these will fit my car? The parts I'm thinking about are:

- JCW side repeaters
- Chrome mirror covers
- Arm rest (which I think does fit)

Thanks in advanced!

Sam.