swap to fleet questions

[68c10owner]

I`m sure there is a thread somewhere but I must not have put the right words in the search box. I`ve gto a stepside and found a fleet bed I want to put on. What will i need to do the swap? Are the fuel filler hoses the same? What about the wiring? I`m pretty sure I`ll need to get a new mount kit but I`m not sure what all else. This is my daily driver and my only transportation at the moment so i can`t afford alot of down time trying to figure out what all is needed. I wan to get a list together so I can get everything I`ll need and just swap it all in a weekend. Thanks.