I apologize if this is the wrong section for '87-'92 Brougham posts, but there isn't a section on the forum dedicated to just the Brougham nor one for all of the RWD '80-'92 C-Body/D-Body cars (DeVilles, Fleetwood Broughams, & Broughams that all shared the same body style), so I'm never sure where to post.

I'm looking for help finding the correct OEM air ride shock absorbers that work with the factory air ride suspension and the under-hood compressor for the '87-'92 Broughams. The air shocks on my '90 Brougham Base are shot. The ones currently on the car which predate my 7 years of ownership are installed in series, not in parallel. One of them has two valves on it - one is the inlet for the line coming from the compressor, and the other is an outlet that runs a line to the shock on the other side which only has a single valve for an inlet. A suspension shop looked up the original part numbers for me and said they were 22064425 and 22064426.

I cannot find those specific part numbers available anywhere. The only rear air shocks I can find through any vendor or website, all of which claim they "fit" or are "compatible" (including any part numbers I've seen referenced in other posts on the forum) are for single valve ones that are meant to be installed in parallel, usually to a valve that is used to air them up manually instead of being connected to the under-hood compressor.

Is it possible that some previous owner just installed the wrong ones in series and they are actually supposed to be some other type installed in parallel? If so, what is the correct OEM replacement part, and what is the correct setup? I am in the process of moving from Idaho to Utah, and unfortunately the car and I are in Utah while my Factory Service Manual and car lift are still in Idaho. I want to keep the OEM setup with the compressor (and not have to air them up manually), so if anyone can point me in the right direction that would be fantastic. Thanks!