my buddy's stock pump went bad after a year with the radix, turns out, we didn't add an inline pump so it squeezed the hell out of the factory one. since the gas tank is down already, we though of getting an in-tank fuel pump instead of running the intank and inline. Walbro doesn't have something listed specifically for a 2000 4.8 Silverado. were not sure if any mods are needed.