The manual that came with my '06 says Bonneville, T-100 and Thruxton are all 360, and the America and Speedmaster are 270. Doesn't list the Scrambler, which I believe is also a 270 degree engine.
Of course, that was when they still had carburetors, not EFI with carbie-looking covers!
And you're preaching to the choir about the Bonnie!

I've swapped the shocks for Hagons, and added a Supeerbrace fork brace. Now they have a Superbrace that's made for fork gaiters, which not only look retro-cool, but they keep the crud out of the fork seals!