Thanks for the message TT, Here's the verbiage you're referring to:
"Note if you have a 67-68 with a console you will have to modify our brackets and order a certain mix of knobs due to the special nature of the console mounts, (here are the photos of our radio installed in a 68 Cougar:
Install in a 68 cougar - a set on Flickr ) "
Please note:
any modification is done to our brackets, not the console, as our shafts are free floating, not like the competitor's units that have the shafts locked in a much larger radio body... this is great for vehicles that have vintage air or limited space behind the dash.
Here's a video of the install too: