Compnine and another allow you to break down most everything to identify part numbers. Also, I bought fuel lines for a Blazer off of Ebay from a guy who strips Blazers for a living. Paid $30 for all three lines.
I think you have some options to replace the entire line rather than install a patch if you so desire. I have been doing some searching for parts for your truck, but DOD computer syatems bloack many sites.
I don't see this option on Compnine. All I see is a VIN decoder.
Whats in my driveway: 1998 Chevy S10 4x4 ZR2, 1999 Olds Bravada, 2001 Pontiac Bonneville SSEi, 2007 Ford F-350 regular cab 2WD, 2008 BMW 335i coupe (Wife'* replacement for her Bonneville). The Bonneville is my favorite of all the cars in the driveway.