has anybody used these frame rails?

were torsion bars used or coil-overs put in? if the spacers lowered the k-frame, to I'm guessing where it would be with the factory rails, was there clearance problems? or was it before spacers were put in? Thanks for all the insight!
I bought it disassembled with t-bars. I reassembled it to check fitment. It was originally built in the 70's. It had no inner fenders or support. I welded in nose bars with the top of the frame rails measured to a stock a body. Then I found out the bell housing wouldn't slide into the tunnel. I had the spacers made to lower the installed height of the k to compensate.