Kitz is correct...Rock Valley makes a 20 gallon stainless tank which will fit in the stock location. But I have seen these in several cars and I didnt like what I saw. Its your car, so its your decison. It all depends on what you are going for. Personally, I dont like the oversized tanks on early 30s because they gain their extra capacity by expanding downward. In other words, they hang down too low for me. When you look at the back of the car, all you notice is a huge gas tank.

If you figure your car will more than likely get 15 mpg or better, this means you can easily drive around 200+ miles with a stock tank. For me, I need to stretch out my legs, get a drink and "smell the roses" by this time anyway.

The only reason I bring this up is some people in the past have bought these larger tanks only to realize afterwards, they spent lots of money and end up with a huge tank which only detracted from the beautiful flow of the 30s cars.

Just something to think about...Let us know how it works out for you.