I did this,I dropped my 65 on a 93 frame in part because I had a bad frame but mostly because I could get parts for the newer frame.I needed to rebuild my floors anyway.The frame is a couple inches short but this allows you to shrink up the gap between the bed and cab and redrill the hanger for more drop.

Those look like fj45 taillenses. I like em better than the stout's red/amber ones.