Living in the Past
SILVER Star
you have right
is the channel on top of floor and sill!!View attachment 1061414
It would appear the inner sill is actually stamped with a offset for the floor to fit into. I serious doubt any vendor has gone to that length. My issue is going to be to find a couple of round slugs and have someone fill the holes on my 68 and 70. Just wonder why people felt the need to either drill the sill or the back frame member to install a trailer light plug. I have these two and a couple that drilled the frame member. All had a hitch that was lower then a trailer light plug next to would have been. Even with the pintle hook I still mount the four bottom of the frame member rather then drill holes in anything.