My wife and I were gate attendants there in 05. Very nice CG and sites. Park is close to town on the Teen/Tom waterway. We had one ranger we didn't especially like. The resource manager, if he is still there, is a person that we knew as a child growing up. Good person. I think you would enjoy working at Foscue.
Yep, I know where Yellowstone Edge is. It is a nice park, but as you say, is no where near the immediate entrance of Yellowstone. Gateway Motel and CG in Cody has been torn down and a chain link fence around the property.
I have the 3126 300 CAT. Don't know where the ten year deal is coming from. With rear radiator, there is a lot of heat over the belt. I have replaced one at 104,000 and another at 175,000. Both of them on the side of the road. The first one was inspected the day before it went out. The MH is a 99 with 185,000 miles now.