dropping the tank isn't hard. youtube is always a good resource. people post thing like this...
that could help. imo, don't cut the bed because this...
looks like a ridiculous thing to do to your truck

 

Thanks to all who helped me. I decided to cut hole in bed to access pump. It took 5 minutes. 3 fuel connections to unhook 2 electrical. I slide pump out. Ten minutes to get pump out. Drive to auto part store was the longest part of the process. Drop new pump in and reconnect fuel and electrical. 5 minutes. Patch hole in bed replace bedliner. Done easy fix One start she fires right up. 233,xxx miles and counting