Thank you.
I used the DML StuG III F kit, I believe it's # 6033. It contains all the parts for a D variant included, you just have to know where to look.
I used styrene tube and rod for the airfilter cannisters, bending tube for the airhose. I scratch built the supports using some schurzen mounts found in the spares box. Styrene strip and spare PE made the mounting straps.
The brush guards peculiar to these models is .020 styrene rod, bent and glued into .021 holes drilled in the fenders.
The jerry can rack is styrene strip eyeballed and cut to fit based on photos of the real StuG.
Sandbags are Milliput and tracklink armor is from my spares box.
Paint is mostly Tamiya mixed to the appropriate RAL shades of 8000 and 7008. I weather it with enamel, oil and various pigments and chalk pastels.