Hey guys, I was told I needed Nitrophyl Floats on my Holley 850 DP. I called a budy of mine that has done some basic rebuilds on Holleys, and he has alot of parts. Now after looking at Jegs and Summit, I naturally know that they are not the brass ones, and the only other ones I see are the black ones that look like they are made of plastic. My buddy has two of the black plastic looking ones that I think are the ones I need, but how can I know for sure? Does Holley only make Brass, and Nitrophyl? Any help will be appreciated.