Coolhand,
Du-Bro makes a flat-ish rectangular fuel tank. Also, Tettra I believe makes something like that. Check Central Hobbies out, they carry a bunch of them.
Also, the link for the Moose landing gear is
http://moosecarbonfiber.tripod.com/ . They don't have a great selection right now, but I hope that they extend their product line. They sure do look nice.