So my wiring in my used to be slant six 1975 dodge dart sport is pretty shot. A lot of burn marks on some of the plugs and bulk head wiring. and most of the wiring is brittle. Now to the question I need to ask. Classic industries has a engine harness for a 1972 and up Abody for a big block. If I buy a whole new under dash harness that comes with the new bulkhead plugs. Will the big block harness work? Yes the dart has a 440 in it now. I am also replacing the rear and front light harnesses as well.