Rebuild or replace?

The 67 wasn't designed for dual exhaust. the trans cross member is not cut away for exhaust pipe on right side. when you reach the rear of this car her single fuel tank strap is in the path.
All that is after you accept the headers in a-body headache.
Bone stock 2brl and single exhaust has got her from point A to B for more than 50 yrs.
Regardless which route I took, I would invest in a new radiator.