totally late to the party, but i want to add one thing:

bullhorns only come in 26.0mm, except for the soma bullhorn that is 25.4mm. the op probably has a 25.4mm stem on that bike. this isn't an issue if you flip/clip flop/chop.

people will tell you not to shove a 26.0 bar into a 25.4 stem. it can be difficult and will scratch your bars, but it can be done. i did it: