" From: Matt Haas <mhaas@xxxxxxx>
"
" <snip>
" >these would be the best, but also the stock frame extensions from a
" >'68/9 american should be fittable. they don't connect directly to the
" >rear rails, but they extend the front rails all the way back to the
" >kickup over the axle.
" <snip>
"
" Not all 1968's have these. There were a bunch of structural changes to
" []
" You want these from a car that lists that it meets Federal Safety Standard
" #204 on the door tag.
i'll bet this kicked in on 1/1/68, mid model year.