I don't represent these people in any way, but I got one of their snorkles, and it was a lot easier than building my own. It's tested by many before they sell them to the public. It comes prebuilt as much as possible. Just trying to pass on a great product to others.
Here's the link again.
http://www.triangleatv.com/products.htmlFor 400 & 450 foremans as of now, but building them for others and testing them now.