Sure can Grumpy..
I borrowed a pic from the internet for frame dimensions and a clearer pic of what I did.
The red lines are where I took measurements from.
There are 12 total mount holes in the frame...six on each side.
I used a tape measure to get a diagonal measurement from the front mount hole on the right side of the frame to the rear most
mount hole just before the up turn on the frame on the left side.. I just hooked the tape onto the edge of one hole and measured to the center of the other hole.
Then I repeated the same process for the other side. The measurements should be the same... I came up with 78" on one and about 78 5/8" on the other .
This is how I check for racking ( out of square) on the frame.
The reason I used the inner most holes on the front is because these are unused mount holes for this model car, therefore they are in great condition.
the rear holes I used are in great shape also..
I am going to recheck tonight ... I want to make sure the frame is level front to back, and side to side. Then take new measurements.
The way my friend straightens frames is with the use of a " hydraulic porta power " ...
The frame is chained down to the floor and while one rail is held in place, the porta power will
push or pull the other frame rail in the direction that he deems needed.
I found that the factory acceptable tolerance for out of square is 1/8"...
My tolerance is "0" .... Though he may charge me extra for that!