Need Help With Restoration Info

I am starting the restoration of a 1963 Impala Supersport. It is one of three projects I have going. I've been working for about six weeks on a '67 Buick Skylark and a '67 LeMans OHC6 SPRINT (rare).
I began some preliminary work today. I unassembled the one piece front and rear bumpers, I cleaned up the 15" chromed reverse rims that come with it. and I cleaned up the center storage console and shift console.
The car has a Mr Goodwrench 350 which I may be pulling. I have a 396, 350hp with an aluminum 4sp, And I also have a 327 short block that came out of a '66 SS. Since I don't know what the original engine was, I'm tempted to use one or the other.
The car has little or no rust. It has power windows (Non op at present). I was planning on doing a frame on restoration, but since I found out from the little I understand the Trim Plate, the car was originally Autumn Gold, I may sell my other two projects and concentrate on doing a frame-off restoration with the 396 and 4sp, or the 327 with a 700R4 transmission and use the same shift console. That Autumn Gold looks awesome to me.
I am posting a pic of the Trim Plate and I hope someone here can give me a good interpretaion of the original car design. also posting other two projects.
Bob