I installed the Ididit 4.5" drop column mount and mocked up my trimmed-down C10 Motorhome steering column and wheel. I'm not certain if this is the final position, but it seems decent. Adding a tilt column shift definitely forces the steering wheel forward a bit so finding the right balance between steering wheel position, column shift arm position, etc was and still is a challenge.
The holes for the factory mount and the dash holes are both elongated, allowing for fast installation and adusting true back in '58. The Ididit posts are not adjustable, so the sloppy mount holes in the dash done by Chevy didnt work. I used a round file to elongate the left side hole until I could get the mount centered below the instrument cluster.
I used a piece of bicycle inner tube as a gasket between the two pieces, and this allows for a clean, tight fit that will also help resist vibration. Inner tube rubber is VERY handy in the shop, I find myself using it often!
