is lip spolier prep

[Turf1600]

I got an is spoiler - but it's solid gray. what is needed to prep it for paint? Wetsand and prime?

My car is schwartz - is there some off the shelf rattle can that will match closely enough - or should i do trim flat black?

Also, I have a ryanG splitter for it. How does it mount? Tape?

[Desaevious]

What I did with my Reiger lip was was prime it and wet sand it it with 600 grit. Did that twice with filler primer then moved up to a gloss black to match my car. The color was a mistake because the front valence is more of a satin black than a gloss or flat black. I did three more light coats of the paint and did a little wet sanding in between when saw fit and then did two layers of clear. You could do more, but you need at least some protection considering where the lip is. Thats how I did it, I'm sure someone with more experience will have a different set of directions. Not sure how you attach the slitter though.