Superlift\'s truspeed will it work on a 90 Blazer? Was wondering if this truspeed from Superlift will work on a 90 Blazer with an electronic 241 T case. And if so is anyone using it? I did a search on it and only came up with a discusion on it, no real answers. I called Superlift and got some guy who told me I was wrong and that my Blazer did not have an electric speedo. Whats up with that? Thanks for any info.