Not sure what I will do ,,,, got any Ideas ?

[GOPAPA]

I am about to install a new poly blazer tank in the rear of my truck frame .

I am going to use the filler neck from a doner truck that will fit in the rear corner of my bed .

The filler neck will be one from the extra tank that trucks have that the filler neck is located at the front of the fender up high on the inside of the bed . The same as the blazer filler tube I am told..
This type of filler neck goes straight up the inside of the bed side and turns out through a hole just like the cab filler necks do ..except that this filler neck in the bed has a (chase as I call it ) that hides the filler neck and protects it all the way up to where it sticks out of the bed side .

My truck is already painted and I would rather not weld onto the bed side to anchor the chase and filler neck and here is one reason why I ask of opinions on this what I am about to do..

I have a picture to show where I want to locate the filler neck and chase I have yet to get ,,I used a filler neck that I had only to illustrate where I am talking about.. The filler neck I have yet to get is one that I can turn complete opposite of the way it fits (180 degrees) ..that way it will enable me to put the gas hose nozzle into it to fill my tank.

click to enlarge the picture .. thanks for reading such a long exclamation .. papa