I am interested in fitting a paddle gear shift on my MK Indy blade
Where can I get on from and how difficult is to fit it?

You could try Martin Keenan at Roadrunner Racing. I know he produces one.

I got mine from Pathfinder on here - nice bit of kit, reasonably priced and dead easy to fit.

another recommendation for pathfinders, lovely bit of kit.

that is looks really nice!
How much this cost then?