Installing a GM tilt steering column in a hot rod or custom is not a new concept. New columns and installation kits have been making it easier for years. The ididit kit is easy to install and works quite well, but the lower mount needs a little help if you're looking for something aesthetically pleasing. The mounting bracket uses a hose clamp to secure the lower end of the column, which can gouge the paint and requires a bulky cover if you want to hide it from view.
The alternative, described here, is to make a new flange and weld it to the column. This method can be used for any steering column application that uses U-joints to connect the steering linkage.
The only difficulty you may experience with this project is disassembly of the column. If the lower flange must be welded close to the base of the column, the heat from the welder can melt the lower bushing. You'll need a GM tool to disassemble the column, and a degree in rocket science in order to reassemble it. Check with ididit, as they can send you the bare column, which you can then send back to have them assemble it once you have welded the bracket on.
This procedure is by no means necessary; ididit's system is sufficient and durable. But, this is an easy way to clean up the interior of your car if you want to add an extra touch.