the only place ive done it so far is the front sub-frame under the motor.soon i will fill the frame rails and i still gotta look at hte back... all you have to do is look at the frame and you can >logically< see where to fill it...

 

Car and Driver once did a similar test, except they lifted three wheels off of the ground; fist at the front, then at the rear, and let 4 laser sensors, 2 pairs opposing eachother from each side of the car, do the talking as to how much chassis flex was.

 

how accurate would something like tha be?

without lasers that is?