Put a one inch body lift.How much space do you have between the filler tube and the floor? On my K5 the filler tube is hitting the floor at the inlet neck.
I agree that the 1" body lift is an extreme measure for that particular problem, but it actually has lots of other benefits that makes it worth the effort in the long run.My plastic tank that I just installed on my Jimmy has a flat filler neck. There are a couple inches between the floor and the inlet. I think a body lift just to install a tank with a bent filler neck is a lot of work and a bit extreme. You’d be better off trying to slowly bend it back down and try your luck.