I have a ‘93 Roadmaster Estate with the lesser 350. I drove one with the LT. It was a rocket ship. I liked the ‘93 better because the dash is nicer and has gauges. You can still get the engines for yours and mine from GM along with the Trans brand new. I did have to take off all the stupid rubber strips on the belt line because I couldn’t keep them from falling off anymore. You had to buy the whole chrome piece to replace them and that was $$$. I did buy a full set of brand new wood grain for it when my buddy at Buick told me that they were going to stop making it years ago. Glad I did that.
To keep mine going to 90 I will have to make it another 52 years. If the Cubans can keep their old pre Castro stuff going in those conditions for this long, I think I can do it too. It may get like that here if we get 4 more years of Obummer. The Volt will be the new Skoda.
Really, you should see the cars that Skoda (which is Opel, I think) are building today: extremely solid little sedans with the nicest purring diesels you’ve ever seen. Taxi drivers love them in the middle east and Europe, and regularly take them well beyond 500,000km.