Not sure where you are located but in Sandy Oregon there is wildcat wrecking yard. They do ship. Also there are a few 71 plymouth valiant parts shells for sale in my area.
I'm all the way in Arkansas. I just got intouch with a restoration garage in town and he is going to give me an estimate. Fingers crossed that I get this done for around 2k which is my motor budget. I need to get this done before I start moving forward with anything else.