Here are some pics of our laser cut transmission tunnel with a huge TR-6060 filling the gap. From the poorly lighted phone pics, there is plenty of room for the transmission inside the Chevelle.
We also were able to get our 2 degree downward angle on the rear flange.
We will post some pics of the top of the tunnel soon, probably after we find out who spilled their coke on the tunnel and make them clean it up.
We make relieve cuts so when we fold the orginal floor up to the panel, they fold nice.
A bit of metal finishing and surface prep for tack welding. This is a great time to have your buddy inside the car with a dolly or other piece of heavy steel to place on the backside of where you are hammering. It really mates the two metals together nice.
Making progress on tack welding.
Here we have most of the two panels mated together. Keep the welder around while you do some metal finishing. Finally, go check on your buddy in the car; make sure he did a good job with the dolly, and he did not pass out from the fumes.