As no glider mentioned, it really comes down to the saddle to bars distance. With a long top tube, you'll need a shorter stem, and vice versa. That said, I have these bars on a French bike with 59cm top tube and 80cm stem, and it works fine. The bars are lower than the saddle. I could stand having a longer stem, maybe 100-110mm, but what I have is fine. It only feels cramped if I try to make a really sharp turn, like a U-turn at low speed.

This is the view from the cockpit:



And this is my riding position, which you can sort of make out from this angle: