yep-should be dry-glazed (i.e. no sealant).
Then again, they always seem to leak with the old gaskets and end up getting some sealant used on them somewhere...
I have heard (no personal experience) that the newer replacement windshields are thinner than the originals. Therefore, when re-using an original 40 some year old molded gasket (which will have taken a set over time), with new replacement glass, they will not clinch the glass as well. So...drip...drip.
I think shady vendors sometimes market the thinner replacements as being "HEMI S/S" lightweight glass. Anything with Hemi in the description automatically increases the price. :-)