Hi everyone, I’m new to posting on this forum and looking for some input. I have a 67 Scout with a 266v8 matched up with the factory 4 speed and twin stick transfer case. I absolutely love my motor but was wondering if an overdrive unit would be compatible with my transmission? My Scout has a Dana 44 with 4.10 gears in the rear so she really starts to howl up around 50mph. If overdrive can’t be added it won’t break my heart by any means she is mostly a beach cruiser and driven locally with short trips up the highway. Just wondering if overdrive was at all possible. Thanks for everyone’s input in advance!!