You can install an automotive type filter in line without any problems. 

We've done this on all 4 of our molines (RTI, ZAU, UTU, and Super JetStar 3) 2 of them still have the glass bowl filters installed, we just wanted finer filtration. 

On the 2 without the original glass bowls, we just bought half turn inline valves (made of some kind of plastic) to control fuel on or off. We've used both 5/16&quot; and 3/8&quot; fuel hose. 

All of these are gravity fed systems. The JetStar is used in the field regularily while the others are &quot;retired&quot; and used for show only. What you've described is exactly what we have done. 


Regards.