Flex/SHO/MKT rear drag racing shock

[4DRHTRD]

I'm getting some info for QA1 so that they can build a double adjustable rear drag shock, this shock should work on the Flex/SHO/MKT platform and help out with 60' times for drag racing.
I need to get the extended/compressed length for Damien at QA1 and then I can start sourcing the shocks for us.
If anybody has a take-off stock shock they can measure and post up here that would be great!

 

[EcoBrick Bob]

I am running air bags in rear of my Flex, to keep front down.  Rear clutches in AWD system only can handle about 150 lbs torque, so extra goes forward.  We need more front traction with the car -AWD  system.
In my 2010 with T/C button OFF, the system shuts down if my fronts spin too much faster than the rears, which hook up first. So... I'm not sure just what type of rear shock would help us.