swaybar question with 11 3/4 brakes

The K-frame changed in 73. The sway bar on these does not interfere with the caliper. The newer bar requires the newer K-frame. Otherwise, swap 'em round like Redfastback says.
Do your lower control arms have sway bar tabs? If so, these suggestions work. If not, most companies offer a tab that bolts to the lower shock mount. The bars have to be longer to maintain correct geometry. I tried one once and took it off. The stock section width tires rubbed on it.