Here is an original natural gas assembly for a Stover hit and miss engine. The valve is mostly stuck but I got it to move a little bit by tapping on it with a small hammer. I know it will loosen up easily. Check out the pictures and see if you need it. For questions 419 789 1159. Looks like it has provisions for a 1/2″ and a 3/4″ gas inlet, maybe the one not being used would be plugged? This mounts to the front of a regular gasoline carb, those mounting holes are 1-7/8″ x 2-5/16″ x 2-5/16. The next part mounts to that with 2 holes 3″ apart on center, and the next part has mounting holes 3-7/16″ apart on center. See pics for other dimensions. No cracks, breaks, or welds. What you see is what you get. Thanks for looking at this listing! If you want to check out my reputation and such please feel free to google search my name. My name and address is. 14316 State Route 281. If you can find a way to talk to me with your voice you will almost always get a quick response. If you message me please try not to sound like a caveman. I have terrible grammar myself so I understand but sometimes it is very difficult to comprehend what some people write. If I make a mistake on my measurements or you feel something is not as described please let me know and I will try to make it right. I think most all of my customers with a normal level of sanity are happy. I think most people would agree that I do an extremely good job of packing items so I guess it’s worth the wait. Check out my other items. Be sure to add me to your favorites list.