It would be a first for me hearing it too. The only think I've heard regarding the transmission tunnel involves using the 727 behind the big block. That requires the pinch weld in the transmission tunnel to be flattened. Anything further I have nether seen nor heard about. The transmission tunnel supposedly requires nothing for use with a manual transmission behind a big block. All that said, no two of these cars were made the same, so I am sure a modification might be required on one that will not on another. Just do like I am going to. Once I get all of the parts, I am going to go for the install and "just do" whatever I need to to get the job done. Too many people always want to know every little stinkin detail before they jump because they're scared. It's impossible to give every detail because every car is a little different. When I do finally get ready to do mine, rest assured, I will take tons of pictures.
