Need help I'd my brakes please!

Is there a part number on the brakes that will tell me what they came off? The top balljoint fits into my upper control arm. The only one that isn't working Is the lower ball joint it's too fat to fit in the hole of the lower control arm. If I can identify what the came off I'll have a good starting point to what I need exactly I've read through all the links but I'm still having trouble figuring it out