Looking to Convert a Non-Flex fuel 5.3 Vortec to Flex Fuel. Just wondering what was needed to do the conversion. Is it worth it? Do I need a bigger pump? I have a set of 42lb flex fuel injectors for the truck. Do I need to change fuel lines, mess with the harness at all, Change the OS on my pcm, etc. All help is appreciated. I know there is a bunch of write ups about this topic but every one says something different.