AFIK, the sub frame connectors were designed for cars without torque boxes. To get the standard B connector to fit the 'vert, the torque box may need to be peeled back and modified for the connector to fit the subframe properly. I have not done this myself, just thinking out loud.

Scott B. "I'm a self-made man... I started with nothing, and I still have most of it!" 68 360 rusty B'cuda 'vert (GO Fish)13.59@ 98.72 mph 69 340 GTS stock 14.18@ 95.60 mph 01 5.9L Ram 1500 Quad Cab 4x4 01 3.5L 300M 16.23@ 86.97 mph