Mr. Smartypants, maybe you should learn to read. Nobody here told him to use starting fluid at 40 degrees, and the comment was a quip. But I guess you're the almighty know-it-all ?
Ride height is not measured by sheetmetal. It's a specification of the difference in height of the lower balljoint (steering arm) and the lower torsion bar adjusting pivot.
Disregard the manual, what Leo says is spot on. Re-connect the vacuum advance after you set timing. What radiator do you have ? hopefully you have a shroud on it, as well.
If I read this correctly, the color issue to me is secondary. Is this a 383 4-bbl THREE-speed ? I'm not sure if I ever seen one. And you're going to make this into a 440-6bbl THREE-speed ? Interesting. If originality is not an issue, color is purely subjective.