I have an Auto 400/205, that is the E-Brake pedal.
our column is out of an 89 suburban, it is "a padded modern type" but I like what your thinking.
plates are 73&Up, My 77 has it.
enough room?Tight hereWe placed the engine back as far as we could get it.
"Engine servicing?" I like the way my Son said it: "these new-school engines from GM are so bitchin, you can weld the hood closed."

no problem, hope it helps, that's what this site is all about. It may share some of the info we didn't think of. You might also search for a
pedal kit for some of the pieces.