differences between the 60-66 frames and 67-72 frames?

[roj2323]

hey all,
well from what i am told the 60-66 frames are pretty simular to the 67-72 frames but i have never seen or heard of a side by side comparison. would someone be kind enough to cure my curiosity with a couple of photos and or a tidbit of information?

thanks all,
ondrew

p.s. hey at least this isin't another will my 80's something chassis fit my 60's something cab? question =)