First things first; outstanding effort on both pieces. I too have a DAK Hanomag Ausf D, so I'm not gonna fuss at you about it's historical accuracy. A couple points have already been made regarding the Tiger, the most noticiable being the wrong road wheels. I'm in the same boat regarding mine. However, with FOV's Tiger that will hopefully be released soon, we'll ultimately have a donor tank to provide the correct road wheels. Another thing was the gun mantlet. The area where the gunner's sights are located was not raised on the North African Tigers. I've modified mine somewhat, I think I'm almost satisfied with the result.
One that's about as big as the road wheels is the Commander's Cupola. I transplanted the cupola from a Panzer IV, and I think it turned out fairly well. This is actually a fairly simple mod.
This..
to this..
to this..

(that vertical upright will have to be cut out to fit the new cupola)
and finally this..
As for the air cleaners, I figure I'd try to get away with a set off of one of those Hen Long 1/16 RC Tigers. My scratch building skills are nowhere near what I'd like them to be, I sometimes I have to cheat.
Last but not least, there were no DAK Palms on Tiger tanks.
Also, a good source for turret numbers is John's Stuff Decals.
http://johns-stuff.com/
Keep up the excellent work and good luck with your project.

If at first you don't succeed, try, try again. Then quit. No use being a damn fool about it.
-W.C. Fields