Mike, you asked for a link to the latches I used:
[URL="http://www.speedwaymotors.com/Slim-Line-Bear-Jaw-Door-Latch,2268.html"]

I see now that Speedway also has mounting plates for these latches. I just made my own plates since they re just flat plates with a few holes.
And, they have a bigger Bear Jaw latch you might want to look at. Or, probably other places have these latches. As always, rethink everything.