What colour fork arm bushes will I need?

[Atreides 2]

I'm looking to fit an Mi16 gearbox (to my 8v 1.9) in the near future, and it looks like there are 2 different types of fork bushes - white and yellow?

 

I'm planning on swapping my push-type arm from my late-BE3 1.9 gearbox into the Mi box before fitting, so was wondering what colour bushes I will need?

 

Any part numbers would be much appreciated...

[Ozymandis 96]