Here is a link to one of my Google Photo Albums that includes the firewall forward. I started with 2 mags and recently went with the Electroair electronic ignition, so you will also see photos of both type of installation. I also did not use the quarter turns on the cowling, they were removed and the stock hinge attach method was ultimately used.
Not a pic but just a observation. When I looked at the engine installation on the Bucker Jungmann that won the Gold Lindy I wondered why he had two gascolators in series. Looking closer I realized that his firewall was so highly polished (mirror quality) that it looked like he had two of everything.