You should search on this forum. I recall that several folks have done this mod. If you don't want to screw it up, take your parts to an authorized dealer and they'll put the coating on for you. A local (SF Bay Area) Line-X shop said that typically these application range between $200-400.
I noticed that surfaces treated with Herculiner or Line-X fade a bit and it is something that I have to consider for myself (I have a black X).