[KellerMAC]

It is about 2" on both side, I used washers as shims so I could add them on both sides to get it level. The neck extension was out of necessity as we mounted the tank with the bed off and did not know the exact location of the bumper. But after seeing it all in place, I like the fact the tank is set back a ways from the bumper. So, I would recommend the neck extension.

I do have a question for the group - when I go to put gas in the tank, it is a tedious process. Some pumps are too strong and it runs a seconds and shuts off, and I have slow feed it and it sometimes drips on the pavement. I heard that if I add a long rubber tube on the vent spigot of the filler neck, then it will help with fuel back pressure. Any thoughts on this and any thoughts what I can do to reduce this problem?

Thanks in advance,

KellerMac