Many of us grew up building most of these reissues, it's very nice to be able to build them again, especially since most of us can now give them the attention they deserve.
A lot depends on the paint. Some have more inherent gloss than others.
1. This 68 Chevelle is painted off the gun with Matthews gloss black poly
Same model and paint with Matthews clear poly added You can see it added a little depth.
This 70 Chevelle was painted with walmart Color Place gloss black then cleared with Testors Wet Look lacquer