frame connectors

crackedback said

The three sided units use the floor pan as a sheer plane/plate. They work very well.

Pick your poison here, round, square, weld to pan are all better than the factory set up!

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go jack up one corner of the car w/ those stamped connectors welded on it, then go jack one corner of one that has the 2" sq. tubing welded to the floor pan, and inside the rear frame, and see which one is stiffest, both cars have to have (or not have ) torque boxes.