
Not my pic, but here's one fitted. The spring fits over the existing plastic cup which the original spring is hot glued into. Sort of a snap fit. It will lean slightly so I turned it round to lean into the pedal.
You will need a T10 Torx security driver to take the pedals apart. I would consider getting a T8 Torx security at the same time should you want to do any of the wheel mods at a later date.