904 or Powerglide???

based on your combo id vote for a glide....they are popular in applications like yours, and for good reason....there comes a time where using different brand stuff is okay in my book anyways- like rearends and trannys....however, using a brand x motor is definatly sacrilidge that requires burning at the stake lol...good luck man, your car sounds like it will be a ride and a half....by the way, where are you from?