When I modified the tunnel for the T56 magnum trans I also cut a notch in the floor on the passenger side for the dry sump oil lines.
This allowed me to tuck the oil lines up above the exhaust to prevent heat damage. I used 1-1/2" square tubing... cut it to fit... and then welded all around.
This shows the clearance of the oil lines to the headers.
The oil lines are sitting on top of the sub frame rail.
Here is a shot of the oil lines going into the notch I cut in the floor. This worked out well and the lines have plenty of clearance from the exhaust.
The lines continue on and go up above the T56 trans cross member and then alongside the frame and sub frame connectors back to the tank in the trunk.
The oil lines are up above the frame rails the whole length of the run.
The oil lines do not go below the frame rails at any point.
