64 Dart GT Slant 6 Convert to 4 speed manual

My friend (and also a member here) had Brewers rebuild his 833OD that’s going behind a 340 in his 65 Valiant. He dropped it off at one show and picked it up at a later show to save on shipping. IIRC he said the rebuild was right at $700 and did require some new internals. I’d check with him for better info but he’s currently in Afghanistan and communications isn’t the greatest!
Thank you, therefore, I can save quite a substantial amount of money by acquiring my own 4 Speed 883 core, and having it rebuilt. I really appreciate your input.