Getting Closer TTI headers installed today

I swapped from 9 inch drums to 10.??disc.from a 73 Dart swinger.Parts store said they were 11 inch.Well it,ll stop fast anyway.Link would,nt open for the cross member notch??My car has lokar linkage and gas pedal assembly for 4 bbl. carb.I think it will work for V8 swap,if not I,ll rig something up.Thanks.