67 Barracuda rear quarter/trunk extension questions

Where's the rear cross member in your pick ? your also supposed to add the little extensions to the cross member when doing the trunk extensions to tie them into the crossmember .I drilled 3/8 holes in the same pattern as the factory spot welds and we plug welded then ground them flat looks like new , self drilling wafer head screws to tack things together then weld those holes after .