That's what I did on mine and was still holding for 6 years when the truck died of cancer.Yeah I removed the quick connects at the engine bay and it looks like I can slip rubber on to them and just use a hose clamp to keep it from leaking temporary. Now, to drop the tank or lift the bed is my next challenge haha
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I found that if you removed the drivers side bed bolts and just loosened the passenger side bolts and the fill tube from the bedside you can lift the bed high enough to get to the top of the tank.
If you have 2 floor jacks it's easy to drop the tank also, hardest part would be getting in there to disconnect the fuel lines.