
Ambush camo was first applied 19th August 1944. Zimmerit stopped being applied on 7th September 1944 and later in September a small batch of MAN Panthers were fitted with the steel tired roadwheels so i don't think the two would have coincided and I cannot find any images or references of any steel wheel Panthers with zimmerit
The extra roadwheels were almost entirely down to the crew/unit etc so unless you are doing a specific vehicle go nuts basically
The road wheels would have been painted in single colours of RAL 7028 Dark yellow, RAL 8017 red-brown and RAL 6003 Olive-green
I can only find mounted MG42's on halftracks so i doubt any would have been mounted on a tank as the AA machine guns were typically cross compatible with the coaxial or bow machine guns
The curved exhaust hoods where introduced in late January 1945, the flame mufflers were introduced in October 1944
You would also have to replace the Idler wheel with the earlier version as the self cleaning idler was introduced in October 1944
If you want to get this Panther as accurate as possible get a copy of Panzer Tracts 5-3, it has tons of diagrams for all the external components and has a section going through when modifications were added