[dsraven]

here are a couple of pics of that set up. I am also using the steering column from the donor vehicle and you can see how GM has put that together so only the shaft protrudes through the firewall. this rubber or urethane boot attaches to the rack just outside the firewall co it's vary clean and weatherproof. just some ideas. possibly some wings welded to the column tube or some winged clamps on the tube could be bolted to some reinforements from the dash to the firewall or, if you are running a firewall mounted booster and hanging pedals, you could make it work with the column bolted to the pedal bracket.