Got the line
Brantel,
I got the line from my friend. I was mistaken about the integral firesleeve, it has the red silicone type of firesleeve. It is 40" long stainless steel braided teflon with straight ends (stainless steel b-nuts). It has never been used. Supplied by Superior on their early XP engines. They eventually changed to the integral firesleeve type, that is what I have on my Superior IO-360.
It's yours if you want it at no charge, just PM me your shipping address and I will ship it out USPS.
Just trying to help another RV'r out.