Fuel Pump Holder Material in the Fuel Tank

Hello, I've designed a Fuel pump holder for my in-tank pump. I'm planning a 3d printing it. My question is if the plastic material will affect the fuel in any way. If not what material due you recommend for the build.

I would test that by making a small part of the same material, and putting it in a jar filled with gasoline. I would think that if it survived 48 hours without getting soft that you wouldn't have an issues. Perhaps you should make two parts and put one in pure gasoline and one in E85.

If I had to guess at a material, I would choose something with nylon if that's a choice.