First post on this forum. I am the proud owner of a 1983 3.8L Cutlass Supreme. Problem is... Everything. None of my gauges read correctly, computer is only throwin a 55 code for the 02 sensor. Missfires, CA smog and gross polluter numbers and not having been run in 8 years. The frame has very little knicks or dents in it at all. Problem is all mechanical.