Gas tank replacement

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I'm replacing the gas tank on my 1999 Olds 88 with 210,000 miles. The gas tank is very rusty but still holds fuel. The three metal lines on the pickup rusted away to nothing which caused a leak. The lock ring, gas tank and fuel pickup have rust fused into one chunk of rusty metal so everything is being replaced!

I need to replace the three rubber fuel lines that go from the metal pickup tubes in the gas tank to the metal fuel lines from the engine. The dealer only carrier one of the lines. Rockauto.com sells lines labeled Feed and Return. Do you know if the Evap line is a different size than the feed and return? I could always use a rubber hose and two hose clamps.

There is a plastic sensor off to the side of the fuel pickup on the gas tank that has an electrical connector. What is that called? The grommet split in two when I tried extracting it from my rusty old tank. The dealer has one but it costs $75. I am not sure if GM parts direct has it or not. The dealer gave me this part number: 16238399.

Thanks for the help!

[96 SSEi]

that sensor may be the fuel tank pressure sensor, but i'm not positive

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I successfully replaced the gas tank. The feed and return lines from Rockauto worked just fine. The Spectra replacement gas tank that I bought had two fittings that were smaller then the larger main fuel line. The lines on the car were three different sizes. I didn't take photos so I didn't know what lines went were except for the obvious. One of the small lines just reached the hard line on the car so I bought generic fuel hose from Autozone with small clamps. It worked. The car started right up.

The mystery sensor was a fuel tank pressure sensor. I bought one from Rockauto for $30.

While dropping the gas tank I broke a fuel line. While replacing one fuel line I broke another. This process continued until I replaced every fuel line from the ABS motor back. I about lost my mind when when of the unions I bought from Autozone started to leak. After replacing that last part my car is finally drivable again!