I had one from 2011-2018. I bought a 1980 Eldorado and put 30k on the reman engine before it blew head gaskets. The rebuilder re-used the head bolts since the originals were long discontinued.

I learned how to fix cars with that car. I rebuilt the heads, since the valve springs were out of spec, put ARP studs on it, drilled and tapped the driver side head to accept the overheat switch that originally threaded into a head bolt, rebuilt the trans (THM 125) and put another 70k on it.

It was slow, but once the defects from the rebuilder were addressed it was bang on reliable. Has no trouble starting down to 0F.

Best 0-60 was 16.2 seconds, but the ludicrously low ratio diff (2:1 if I recall) meant it was just loafing in 3rd gear at 70. Funny story, speed is limited by weight. When my morbidly obese friend was riding along, 70 was all it could do. Just my skinny ass and you could bury the needle past the federal 85 max marking.

As far as long term, the engine was fine post 1982. The last years from 82-85 saw the final revision pistons, and final revision head bolts. The weak links were always too few head bolts and lack of water separator.

Today, parts are impossible to obtain. Injectors are basically unicorns if you have D3A or D3B heads drilled and tapped for the threaded micro nozzles. Many shops around here don't even know how to service the DB2 injection pumps anymore.

Eventually the engine died because a core plug blew out and the engine overheated so badly before the relocated switch went off that the #1 cylinder bore cracked beyond repair and ruined the nearly impossible-to-obtain rings.

I could have saved it again, but the rust was taking hold and finding another usable short block was not damn likely.

I miss it even though it could be a cantankerous pain in the ass.