fuel pump height/clearance issue

[shunt97]

I have a 2000 Chevrolet c2500 5.7 standard cab 2wd and my fuel pump assembly just went out. The assembly that just went out (part number 19258937-04) is a fixed height and everyone that I find available is one of the spring styles where you compress it into the tank, and they are about 1/2 in. too tall. I brought the old one into an ac delco parts rep and they can't even find anything. Does anyone have any information on what the issue might be? I set the 2 pumps side by side and verified they are different heights. Could my 34 gallon gas tank be an odd size? Should I

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just by a new gas tank that fits this newer style pump?

 

[GoToGuy]

It's still available, by part number.

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[shunt97]

It's still available, by part number.

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I'm lost, where is the shared part number? I went to the link and it doesn't look like the same. It's missing a tube and the harness plug in looks different.

 

[GoToGuy]

I thought I put the part number in , 19206124, yeah the middle tube is not there. Sorry. All the info I got is not the shorter, there all taller. All though they list a bunch of RPO codes to determine model.