I finally got around to finishing the new tunnel. The T-56 Magnum needs a tunnel upgrade in a 2nd Gen to get the driveline angles correct. This may not be the case with stock components but with 1/2 height body bushings and a Quadralink, it is a definite.
Here is the new custom tunnel going in..
I fitted a flat piece to the edge of the floor pan brace
The finished result