The floor opening was increased for the transmission and Quicktime bellhousing.
A loose cardboard mock-up was made to get an idea of the shape of the tunnel. This car will be running a stock 1965 Impala console, so a mounting surface was required for that as well.
The new tunnel was made and welded in place.
A few ribs were added to strengthen the firewall at the tunnel.
Now we had plenty of clearance for the transmission.