Stock tanks for our cars are cheap because Camaro's use the same tank. I replaced mine and it wasn't that tough a job. I think I paid $115 for it a year ago. I was happy that it solved the same issue you're having. I had to replace my fuel filter a couple of times due to junk in the original tank. I should have gone ahead and replaced the sending unit too, but didn't. Mine is a two tube unit with a vent which isn't nearly as common on eBay. I have issued with the gas gauge too. I know it's a bad ground most times, but I think it's just time to replace it.