OK, that was fast.
I have this pair of tanks and mounts in my garage (SALE PENDING), but if you PM me directly, I can get more stuff tomorrow night.
The owner of Rotopax is a friend of mine and he sells me small batches in bulk--this last deal was to help me raise some money for my son.
I can get a few more, but I can't post them here otherwise I get booted to Vendors.
PM me if you're interested.
Right now there is a sale pending on the first two tanks / mounts, but I'm getting more tomorrow.