I seen a set of Carnac heifers that I'm kicking myself for not buying. There frame size was right, and hip was nice and square.
You might consider trying smiling bob heard good things from one that seem him.
I've seen him he has plenty of hip! Especially on the two sunseekers I bred him to, I mean for a first calf heifer you ant the calf to come out with out splitting her wide open!