Need some help!

So.. my front disc brakes are done and I need to replace them. The thing is, I have a 1970 Dart 4 door. I did some research and I found out there were no disc brakes standard on 1970 a-body's. They were on the car when I bought it so I don't know what kind of brakes are on it. I assume they are from a 1973-up A,B,E or F-Body. Is this right??

I want to replace them with Wilwoods. Any advice?

How do I find out what's on the car now?

Thanks! (Just asking to be sure)

The car was originaly build or at least from Switzerland.