Under dash help..

You may find this interesting... For 74 thru 76 models the factory deleted that 3rd lower bolt.
1974 DODGE A Body Steering Column Mounting Bracket - Dart Duster Scamp Valiant | eBay
I have to wonder if the assembly line workers had the same problem I had with it.
I've noticed aftermarket columns such as ididit use only the upper 2 studs for their column mounting also. Alas, the caged nut without a bolt tightened in it could make a rattling noise. Carry on.