Thanks for the picture of your Lippert Equa-Flex equalizers and listing the capacity of your axles at 7k. Based on that we know that the kit you need is the part # LC279688. view full answer...
The HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1 is designed to work with a standard style breakaway kit like you have currently so it would work well with what you have. For more info on this kit check out the review video I attached as well. view full answer...