There are 4 main other fora that I search to learn as much as I can before asking
@david hill for his always generous help:
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https://www.cadillacforums.com/forums/rwd-deville-fleetwood-brougham-19xx-1996.97/
The third one is a Cadillac forum, but as you know the FWB and RMW share a number of parts and subsystems. Quite a few RMW owners own or have owned another B-body (Caprice or Impala) and/or a D-Body (Fleetwood Brougham). Indeed, I owned a 1996 FWB that I sold to an FCBO member in fall 2024, and I found quite a bit of useful info for both Lalie (the Caddy's name) and Betsy there.
Here's a photo of Lalie as eye candy -- yes, she dark cherry too (triple burgundy in her case -- paint, leather, vinyl top):
View attachment 750399
PS: Finally, there’s the Impala SS Forum:
https://www.impalassforum.com/forums/
It is very active, with some silly posts but also some very knowledgeable folks—sounds familiar? I look at it for the same reason, lots of common parts and solutions. They have subfora for the Fleetwood and for the Roadmaster:
https://www.impalassforum.com/forums/roadmaster.33/