Hey everyone, I have done a few engine swaps before in my chargers and old work-horse trucks. But my 86 Gran Fury is really special to me and do not want to mess anything up on her. I have swapped the 318 for a 360 but it ummm, kinda went up after embarrassing my brother's '65 454 Impala 5 passes down the 'raceway'. The trans puked too. I am wondering what kind of engine and trans will slip in the empty engine bay without modifications. I'd like a "B" or even a "RB" in there but do not mind another 360 if that is my limitation. When I was running small-blocks I was told by every salesperson I have spoken to says that no headers in production will fit under the hood. Are there headers that will fit this car? Big or small block? Finally, how about changing the rear-end? The stock one is scary to me -this is not a police spec car- and I really want to see something stronger under there. Thanks for any kind of help someone can provide!!