Trying to plumb my fuel cell!?

I just bought a fuel cell for my s10 and I can't seem to figure out how to hook it up! I have -8an inputs on my cell and my fuel pickup line is a 3/8 and my return line is a 1/4. What kind of fittings do I need to run these lines into my fuel cell ? I can't seem to figure this out. Any help would be appreciated!