You're in Canada I'm guessing because you have a CSX-S, so you can check the Canadian sponsors on this site.
You will need the following:
Type R front bumper
Type R rear bumper
Type R side skirts
Type R rear spoiler
Aftermarket will usually have both rear diffuser and front grille already attached to their respective parts.
I have a conversion and it takes a lot of work to get the parts to fit properly even with a good body shop. It's the nature of aftermarket bumpers. Factor in labour to paint and install and you're upwards of $1500. I have an extra Type R front lip located in Toronto if you are interested.