I currently have a 1992 Riviera. 3800 Series I engine, standard suspension (wish it had the GranTouring option). Has anyone here owned or own both say a 1982-1985 Riviera with the Oldsmobile 307 5.0 130-140 hp engine AND a 1991-1993 Riviera with its 170 hp engine? If so, how do they compare as far as freeway and mountain acceleration, handling, comfort and ride? I have had 3 1996 Series II Supercharged Rivs, miss their performance. But I have other big 1994-96 GM cars with LT-1s to satisfy my need for freeway fliers. I also owned a 1990 Brougham with the 5.7 and towing package. It was beautiful, but a dog on the highway compared to my 1994-96 Roadmasters. I kind of expect even LESS from a Riv with the 5.0 Olds to tell you the truth. Hopefully ride and comfort will be enough to make them enjoyable.