It's in the gas tank

Needs a muffler.

57 buick I think

Take the old one and compare them

Well first all you have 2 one is an outer change that first the other is in gas tank

If you are giving him a lot of canned food cut that back and see if that helps make sure you have him wormed and up to date on all shots

My  ultra sound I just had said I have fatty deposits in my liver I have to go for further testing my liver enzymes have ran high thats why I had the test