So now its all back together. So to recap all of this.
I have a
2004 P32, 8.1, with AC
The parts that did work are as follows
1. Idler for a P32 with AC
2. Tensioner for a P32 without AC
3. Belt for a P32 doesn't work at all if you order it for AC or not. Its Gates K061031 that is 103 5/8" long.
This all started when I picked up the camper and it had a squeak coming from the front. I knew it was probably something to do with the belt. I can only guess it was the tensioner???