63-66 idler arm conversion to late model thru bolt ?

The stud at the K member end makes this impossible to use an original idler for this idea. A '68-72 has some similarities to the early ones. The mounting studs still face UP like the early cars. The shape is different but the length looks to be the same. If you were to add a bracket to go under the K member to allow a "double shear" type mount, it might work.
I keep going back to how these early A body cars were originally designed around light duty usage and how they were built well for the price point. Slant six engines, small brakes, 13" tires and manual steering. That stud mounted idler arm was and IS fine with an 80 HP 170 slant six and 13 x 4" wheels with bias ply tires!