In case you don't find a used one here, I found a Cardone (74-20070) on Amazon for around $115. Worked perfect on my 3FE.
(Yes. I unscrewed the screws of death on my original)
Keep in mind that US import duty fees kick in around $800. I recently put together a very large order to combine shipping and was hit with a pretty big surprise duty fee.
Yes. Those are the same part numbers I ordered. (Didn't order a panhard, tho)
I also ordered new bolts, washers and nuts. 8 of each:
BOLT, WASHER BASED - 9010518006
WASHER, PLATE - 9020119011
NUT, HEXAGON - 9017018007
Fwiw, I ordered a pair of upper and lower rear control arms and related hardware from partsouq last week for quite a bit less than ordering in the US. Took about 6 days to arrive.
This may not help at all, but I had a similar symptom I was chasing on a 3rd gen 4r. Battery light would intermittently come on. It would occasionally leave me with a dead battery. It ended up being the wiring under the alternator fuse. The nuts had come loose and the wiring was vibrating...