Anyone have an idea if Dragon's 6834 Stuh. 42 E/F can be converted to a
Stug III F easily. From the pictures in the review it looks like it comes with the gun mantlet from the G kits and should fit an aftermarket stuk.40 L43.
Are there any other external differences between the stug. and the stuh?

I would think after looking up photos, that just changing the gun is all you'd have to do. Like Germans would've done also ammo storage would also have to be changed. But everything else should be the same. Well except for the gun cleaning rods. But why not just buy the F? Or see if you could make a trade. I'm sure that someone on here can help you more.