The Hexelite Company of Casa Grande AZ
is one of the biggest vendors of these floor boards. You can get more info from their website.
I'm not too sure about the titanium screws, though. Aluminum and Titanium don't play very well as evidenced by the 757 Door problems ten to twelve years ago.
One may educate the ignorance from the unknowing but stupid is forever. Boswell; ca: 1533