BMS rear ride heights?

[Dirt36]

Picked up an 06 BMS challenger for a great price, were making some changes to it (sort of a test car) but someone before use has either reclipped the back or did a great job cutting off the under slung portion, I don't see much evidence of it. The problem is, that's where the ride heights are checked according to the BMS sheets. Can someone give me another way to check the rear heights? Maybe from the ground to the bottom of the frame at the 4 link plates? I just need to get in the ballpark. Thanks!

[cgs]

call bms. my buddy has an 07 challenger that was costum ordered as an over slung car.