Moving the Transmission back

The shop building my truck is moving the motor back about 6-8 inches which hopefully will improve handling a bit.

We are bumping out into the bed. Here's a pic of the AODe peaking out.

The later model Econolines had a bump on the back of the dog house for the top of the bell housing. It looks like you are going a bit bigger than those, but if you wanted to keep a stock look you could patern off of what Ford did.

Anyone have a pic of that? I never knew about that since I have a 62.

Here is a picture of the 1965 transmission hump. I'll see if I can find a close up pic.

Sorry, I only have rusty examples of the transmission hump that started in 1965.

ALL  lates (65 to 67) had the bump in the back of the doghouse as well as the taller (1 3/4") doghouse.
  The AOD is longer than the Econoline C4 that uses the short solid output tail stock and usually people use the Mustang or the T bird AOD as it has the shortest length tail stock which is needed to avoid or make the drive line angles easier to deal with and lesson any vibration issues. 
 As in all suspension or geometry issues the longer the drive shaft or suspension part is the lessor the issue. 
 I am curious as to how this will work out for you???  Not only are you using  a transmission that is longer which makes the drive shaft shorter in the 1st place but ALSO you are moving it all rearwards an ADDITIONAL 6" to 8" s shorter on top of that issue?? I am guessing that you will end up with about a 10" or so drive shaft???  
 Years ago I tried using a divorced T box and in order to get it to fit I had a custom shaft made that was about 10" long. No matter what I did with moving it to get rid of the vibration issues I couldn't get it under control. Finally finding a married unit and giving up on the short drive shaft and divorced T-box.