It would seem that the boys at TriumphTalk.com (who obviously read these forums constantly) think so too, considering they (actually the owner) have stolen them (speedo and silver/grey bagger pictures) and deliberately put the Triumphtalk.com logo on them (it's not automatic, the other pictures on the thread don't have it).
They have also been quoting (in fact copy-pasted) the info I have been bringing here (only) ever since I first divulged the Thunderbird name and capacity etc. back in Februray, but that's ok, I guess.
BTW, that speedo pic is the ONLY one of the T-Bird's speedo on the internet ... and it was posted on THIS motorcycle board FIRST (therefore a BA.COM scoop)!