Well finally got to go work on the car. Fab up the rear portion of the system, going to dump in front of the rear diff. Had to buy new wire and had trouble feeding it, ended up finding the birds nest of wire trapped inside the line. All the pipe laid out on how its going to be, still havent got my air compressor wired in, if anyone local here wants to help out I don't touch 220 volts lol. But exhaust is 3.5" from turbos oval (to get past the steering column and headers) to round to just behind the trans cross member then stepped up to 4", had some 3.5" S pipes made up for my 72 Satellite but since won't very using it on that will cut and fit them to the dart. Need to trim a bit of the mid plate for clearing the downpipe to under the car. Man I wish I had a lift lol all this on the ground sucks lol