Our French friend Jean-charles Breucque confirmed that these drawings are declassified.
The source seems to have been a French archive site. So far we have not been able to find it. So it seems like the original files are no longer available for download.
Our French friend Jean-charles Breucque has added some more drawings from his collection:
scope: Jean-Charles added a sketchup drawing. The drawing is not correct, but the measurements are!
scope1: French plan of the cupola episcope, used for panther, T1, KT, (cupola and loader) jagpz4 (driver)...
HL230-P30: WARNING! file size 5MB!
Here a French copy of an original German drawing. Note that it has been puzzled together from small files and two small sections in the left and right middle are missing.