A friend of mine has had 3 different ones fitted to his Transit and they've all packed up after about 15 months so. I think it's a gamble whichever you buy. The first was an expensive one fitted by an auto electrician and the other two were cheap from ebay. Sorry I can't help you with a make but the ones he had all look like the same camera with different packaging. The last one packed up while we were out delivering a bike and it stopped working after going over a vicious speed bump, not particularly fast.
So where does this bit go then ?