67-73 Abody frame Rail and Rad Support
I am so glad you are entertaining this.
I tried to talk my wife into buying it it is sooo clean.
I believe all A bodies 67 to 76 will interchange the rails forward.
Someone else will chime in for sure.
I know where 4 67 to 69 darts are here in CO but don't know about the rust factor. If you want a road trip.
I have seen a few socal 4 door darts for sale cheap.on Craig's list.