[War eagle]

Actually I believe I am correct and the center supports are identical and add to the structure strength. You must look at the center supports again John and note they are not mastic attached(whatever that is) but rather resistance welded to the "wall" of the shroud panel as well as the leading edge of the firewall.

The resistance or "spot" welds have been used in auto construction as well as other products needing a great deal of strength beginning in the early 20th century. In 55, Chevy announced that 92 % of the assemblys were joined by spot welds. That number peaked in the 1990`s and currently is going DOWN with the use of super adhesives.

For clarification, the dash rods at steering column dash mount, attach to the left of the left "center" wiper link support and also thru the left outboard support. One could assume that a right hand drive Tempest would use a right outboard support to also attach the rod to the the lower dash.