The tunnel is from American Powertrain it fit my floor for the most part.
One thing is they don’t have any type of template to help with the layout. So i measured back from the bell housing to where the shifter was and started with about a 8-9” cut down the middle to get started.
I had replace all of the floors when I started on the car back in 1991 so they may have not been exactly like the factory but they fit ok.
I did have to trim the drivers side front corner a little and I did fold the lower edge in to get it as close to the floor as I could.