Longer torsion bar bolt?

In my experiences I have found 2 lengths of T-bar bolts. IIRC, 3" & 3-1/2". Also coarse and fine threads. My 68 now has a 73-76 style K with matching LCA's to use the matching sway bar. The t-bar bolts are coarse thread so that may be the switch-over date. The 68 parts I removed were fine thread and 3" long. Because of the collection of parts I put together, one side is 3" and the other 3-1/2". Shrugs. I'd prefer they were matching 3" but it works fine.

Maybe your adjusting bolts are 2 different lengths.