Re: Triumph Rearsets - $165 shipped - price drop
They are Clubman Racing's model #T504 for pre OIF Triumph 650s. I had them on a '67 Bonneville.
Should be quite easy to mount to the A65, the only difference might be the shifter spline. If they are not the same, a cut down and drilled stock BSA shifter could be used. Or, just use the rearset peg on the shifter side and reverse the stock BSA shifter. If you don't like the 1 up 3 down, I think you can reverse the cam plate inside the transmission. I had a reversed shifter on a Velo and it was very easy to get used to the resulting 1 up 3 down pattern.
If you're local, (Toronto) you are welcome to bring the bike over and see if they will fit up.