As you're looking at your column layout look closely at the relationship of the bottom of the column and the connecting U-Joint to the engine, and especially to the plugs. I cut the hole in the firewall, and once everything was in place that top U-Joint is so close to my LR plug that I have to use a cut down socket that has a hex cut on top to access that one. Dropping the column 1/4" more would have eliminated that problem. In fact, I may pull the column one of these days, shift it down a smidgen and do a bit of glass work to fill the holes. Another tip that I got from the guys at N&N was to use a cheap chrome exhaust tip extension mounted to the firewall to catch and anchor the bottom of the column - the rolled end acts as a stop, and with a couple of tabs welded on the top end at the proper angle you can bolt it to the firewall with SS button heads and it's a clean look for your column end. Just some details to consider.