Silver7,
I also got my battery from Canadian tire, and ended up with the Honda one as well. I managed to avoid most of the steps as I have found in the past that the Canadian Tire staff just go blank when you mention anything British so I went in with tape in hand, went behind the counter, measured up the available batteries and said "I'll take this one."
It doesn't seem to have a lot of cranking power but has worked out OK.
I find that all of our local auto parts stores, other than the couple of specialists are hopeless with Brit parts so I generally don't tell them what the parts are for, just what I need. One of the local shops knows me as the guy with the wierd old cars and seem to get a kick out of my looking for strange and unusual parts. (Note: I would never try this with Canadian Tire!)
Cheers,
Rich
1975 TR7 ACL764U