i have a 69 to 71 galen govier decoder book but not 68 my vin is rp23f8g205481 on the title it says p8G for the model, i have a 70 383 4speed 430 gears in it now not the 318 anymore its been sitting since 02 but trying to get back running cant wait to drive it never had a big block 4speed lol thanks paul