How to check frame for square. Help!
I Am Building A Frame Off 71 Swb Chevy. I Would Like To Double Check If The Frame Is Actually Square. Do You Do A Cross Measurement From End To End Or A Middle Cross Measurement From Lets Say Front Bed Mount To Front Cab Mount? I Did A Cross End To End And Then A Cross Measurement Mount To Mount And Both Read A Different +or-. Please Help I Am At The Point Of Modifying The Factory Rear Panhard Mount Crossmember To Accept The Hot Rods To Hell Truck Arm Kit(very Crucial If Frame Is Off).
Thanks,
Perry
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