I don't know if you can custom order fish tanks though, I wouldn't think UPS
would send such a large and delicate shipment as a 6' long tank
Yes, you can custom order fishtanks...much bigger than 6'. They usually have
their own delivery service. (That's how fishtanks get to the LFS, too.)
See
http://www.westcoastaquarium.com/
If I ever win the lottery, I'm getting an aquarium from them. :-)
Leigh
http://www.fortunecity.com/lavender/halloween/881/