Question about a 68 nova

[A468BU]

Hello everyone,
I'm new poster long time reader. There are some very knowledgable people in here so i thought I would ask this question here. My friend has a 68 Nova thats a drag car. About 2 year ago it went on the back bumper and came down pretty hard. It had to have the frame straighten and everything was ok for a little while. Well the frame is moving again. What i need to know is, Does anyone know the measurement between the front shocks? Maybe someone out there is in a middle of a resto and can measure this for us.
Thanks
Brian