The Stuka in London (RAF Hendon Museum) IS indeed a G-2, although they have it marked and detailed as a bomb toting “D” variant. Inaccurate, but understandable, as the plane sits in a Battle of Britain" display - and there ARENT any intact Stukas from that period.
The one in the Chicago Air Museum is a B/R (the long range “B” variant) and is hung at the ceiling in a mock dive. 
There are actually others in various states of disrepair. One in Norway that crashed is in a museum and a new one is soon to be raised from the depths of the Crimea, I believe.
As you may have gathered, I have found a wealth of information on the G-2 in this search and turned up a ton of pics. Some of them I’d seen over and over, but there was one Belgian site that had some I hadn’t seen at all. I also found some that showed one of Rudels early mounts and plenty of other G-2’s. As alumni has noted, most fotos DO NOT detail the markings except as incidental to other action in the pics and there is always some uncertainty as to just what IS depicted. All together, I probably have found 8-10 ten different Gustavs with markings, especially if you arent too fussy about the minor detail differences between the G-1 and G-2 models. And of course we can’t forget “< - + -,” Rudels surrender plane that he crashed at Kitzingen, May 8, 1945. I havent gotten them all out of the download files yet, but when I do I can share them around (since I got them all off the public internet, this should be okay).
Lemme give you all a tip for future searches: remove your search engine’s language filters and search in ALL languages. In fact, after you have found all the stuff in English you can, you may want to eliminate THAT as a search language. Besides the Belgian site, I found some nice stuff in Czech and Russian, too.
The worst part of this? I found some kick-buttocks foreign users of D-5’s. Several Axis ally countries used the Ju-87, not the least of which were Italy, Romania and Hungary. I also uncovered some D models that were captured in N. Africa and marked with BRITISH markings! In case you didn’t know it, the G-1/G-2 were converted from D-3/D-5, so the conversion BACK to the parent “D” model won’t be too difficult to make. How is that for a neat twist?
Looks like I’ll need to get another D/G Stuka…