I'm getting ready to go big on my 2012 Kenne Bell Mustang. On E85, the fuel system really has to deliver, so in place of the stock system and KB 40A BAP, I pulled the trigger on a return fuel system. I ended up going with a kit packaged by Lethal Performance, but it's comprised of a CPE Triple Pump Hat, Walbro 465 E85 compatible pumps (2 for now), CPE Rails, a Division X stainless mesh filter, Aeromotive Regulator, and PTFE Lined SS braided fuel lines. It'll be -10 to the filter, then to the regulator, then -8 to each rail, then -6 return to the tank. They call this their 1400 HP kit, but on E85 it should be good for 900 or so at the wheels. I went ahead and got the hat for 3 pumps and the extra pump just in case for down the road. I've done some of the component assembly, and some of the wiring, but still need to clean it up a bit before starting the install. I should be able to get this installed sometime before it warms up too much. Thought you guys might want to check out their stuff.