Bought a set of clear repeaters for the RS roadster recently but when I went to fit them last night - I found myself heading towards the FTO as it looked like it needed them more (I'm pretty sure the car winked at me!)-
Anyway (wheres that coffee?) I took out the old faded orange indicators - no easy task - found theres just one clip at the bottom that needs to be pushed up and they'll pop out - bit of a risk of breaking the plastic surround on the indicator even though I used a flat head with masking tape wrapped around it to prevent paint damage.
The problem arises when the MX5 backing has a 9/12/3 oclock pattern while the FTO's is an 8/12/4 oclock pattern. I trimmed each one of the three notches and with a bit of impact engineering and a little superglue (just in case) - stuck it back on with some adhesive sealant all around the perimeter of the repeater.
Above took about 10mins - looks the business (the repeaters are v high quality) - but I would not recommend this as an alternative to buying the funky product repeaters. Though at just 29.95GBP - these were considerably cheaper and they do look better IMO. However it has to be sealed as the fitting on the back of the MX5 indicator does not suit the FTO.
Have pictures - but I don't know how to put them up!