Well I'm getting exhaust gas in the cab so I am changing things here real soon. I haven't been driving it hardly at all cause I need to tune the computer and build a real exhaust. It sounds awesome though.
On the 4 cyl Tacomas the fuel filter is bolted on the engine right up against the intake manifold. So I simply moved it up and mounted it to the wall on the drivers side. The truck has so much air running under it heat isn't an issue even when the exhaust is so close to the fuel lines. It would take some catastrophe for anything to happen with the fuel. The lines are super strong and bendable for safety reasons. Hopefully soon I'll have time to build a header back system with the new Tundra muffler I have waiting.