well my auto in my 84 is on its last leg and i need to either get a new tranny or get this one rebuilt this is a project car when i get done w/it it will prolly have 350hp at most so i dont need a wild transmission a local mustang shop (Delk Performance) will rebuild it for $650 w/stock parts back he said i could pay a little more if there were some performance parts i wanted in it.....is that a good price and what are some parts to help out a auto transmission i dont know much about them like what does a shift kit do other than firm u shifts etc... thanks for the help