All the above is great. When you have your Vette aligned, 'Positive Caster' and 'Toe-In" help to promote stable tracking. For general touring duty, I suggest you have your alignment specs set to the following:
In the front:
Caster: maxed out positive(+), but close to equal on both sides.
Camber: slightly negative; -0.1 to -0.5 degrees.
Toe: slightly toed in; 0.03 to 0.06.
In the rear:
Camber: slightly negative; -0.1 to -0.5 degrees.
Toe: slightly toed in; 0.03 to 0.06.
The rear is what presents the most challenges to alignment jocks. First off, to adjust the 'Toe', they probably won't have the shims in stock. You can buy a pack of stainless shims from the vendors listed on this forum. Of course, you have to be able to loosen the cross-bolt to get the old shims out.
Aftermarket tubular upper control arms will usually have provisions to get a lot more caster. Mine is set to about +5 degrees on both sides.
John