I have this -6AN feed line and the fuellab e85 safe filter shown in this kit:
http://www.maperformance.com/map-fue...-evox-ffl.html
the filter is stupid pricey though, like 150 bucks but its huge.
It's kind of hard to tell by looking here but this is the filter on my firewall, hard to tell size without a reference but its big.