Now I can plan ahead. I will have to take the 4:56 geared dana that is in in my GTX and put it in my Charger. I will take the 3:54 geared dana that is in my Charger and put it into my GTX. (GTX in an automatic) The 18 spline in my 68 is freshly rebuilt with only 1800 miles on it. I'm anxious to know what the final cost will be for this new 5 speed box so i can decide if I want to trade in my 4 speed HEMI box. Thanks for the effort Jamie and keep us all posted.