Does the Atak zimm for late Panther A 35019, fit the Dragon Panther Late a premium kit 6358? I know the premium kit is pieced together from D,A and G kits.

Yes it will. I did this upgrade and any fit issues were due to resin sheets shrinking. Also the skirt armor doesn't allow for the zimm to be added although it comes in the set. If you glue it on, the skirts are too thick and you cannot fit two panels on one support hook. So if you want to use them don't thin the zimm skirts and glue them on the metal skirts, just use them to replace the metal ones.