Not sure about most of your questions, how ever your last sentence made me wonder.
You said you like the extra accent line detail of the 73 hood. I just think you should know that the front facing body line to which I'm pretty sure your talking about was started on 79 models. It did not exist before then.
Also, the loop type latch that I believe your talking about was started in late 70's also. My buddy has this style, (with the interior release) on his 79 GMC High Sierra. It was an option. My 79 Cheyenne does not have the interior release.
Is this the accent your referring too?
