Gentlemen - I am hoping you can help me out. I purchased a rat rod that is already under construction. Make and model are irrelevant. Unfortunately, the person who was working on it passed away. I have been told by the spouse that she believes the front end is from an early 70's El Camino. I am trying to determine where the front end came from so I can establish the technical details (brake pads, etc.). It does have disc brakes. Is there any way to ascertain the donor vehicle? Any method to identify where the front end came from? (I an pretty sure it is GM due to the lug nut pattern). Any help is appreciated. Thanks.