As promised, here is the picture of mine. Disclaimer, this picture didn't do justice to the real thing. I have a 5 year old digicam, out of 5-6 takes, this was the best.
I'd not recommend you to DIY. I bought it as part of my spec, so it's covered under the original warranty. I was charged an extra $1000 for the whole thing incl. install. I dropped it off in the morning thinking it would be done in the afternoon, I checked at 5 pm it still wasn't ready. It was finally ready for pickup the next day and I know they weren't very busy that day. (The part wasn't available when I pick up the CX-9, so I had to come back 2 wks later)
I didn't go 3rd party, yes it's cheaper, Target sells one for $100, because even though it's wireless, you still have to hook the power cable. And then the viewfinder (the one you look at) also needs to be hookup somewhere easy to look at, without having another power cable go everywhere. I like the factory look and boy, the image is so sharp, I doubt any 3rd party can beat that. Even the service manager was wowed by it, she never thought it was so amazing (granted it was their first install!!) In fact I like to put the cx-9 in reverse just to play with it.