Fuel Tank Dimensions Please

[rlubikey]

I wonder if one of you kind gentlefolk could give me the approximate overall dimensions of a saloon fuel tank? I'm looking for a suitable tank for my ... ahem! ... Atlas, and it's just dawned on me that the saloon - similar to the TR6 but with the filler at one end - might be a likely candidate! It would be nice to keep it all Standard-Triumph.

Thanks,

Richard