The 3ttt are some nice bars, I have them (TdF) on my bike, 42 width. I looked for the Cinelli 64-44 when I was building, but as said by repechage, they are rare, the few listings I saw were spendy. You can get the new ones at Amazon.com, I just didn't want to compromise on using vintage stuff.
Best of luck on finding your choice of bars, can take some time.
Bill