Fueling & Injection - What Walbro will fit?

Need to know what walbro will fit in a 99 Silverado fuel sending unit? If the same one that goes in a F body then i will just order it.

They don't offer just a pump that fits in a 99 Silverado, only full module assemblies, here is their catalog:
http://www.tiautomotive.com/global-product-divisions/aftermarket