By George I think you've got it! This is a car I'd like to build (with a Challenger body) but always have stopped because the sides weren't right. Your paint job is the closest I've seen to being accurate for the Challenger.
If your friend has any of the Revell kits of the 60's and 70's, I really want those. Please consider giving me first dibs. I grew up attending the national motorcycle drags at Beech Bend in Bowling Green, Kentucky until the last one ( https://news.google.com/newspapers?nid=1696&dat=19911002&id=_A0bAAAAIBAJ&sjid=C0gEAAAAIBAJ&pg=5926,318817&hl=en ), they were a good time. The last one, almoast closed the park.
Do you ever look at a kit that is so well done, you don't even want to attempt it. Its a rare emotion for me, but this is so beyond my abilities, I see this kit staying sealed. Mercy this is beautiful. Carl Casper would be thrilled.