Hi Steve,
CLW and Overland Models are also decent options for that type fuel tank, harder to find albeit. I see both pop up on eBay occasionally, although the CLW is usually included in a kit. I'm not certain but I've been told CLW is still in business for custom work and such. Not sure if this is still valid but here is the contact info for them is 760 221-5558, clwusa@verizon.net.
Good luck,
John