Fuel rail size question
It takes A LOT of E85 to make that much power.
No, no I would not use -6 rails. I'd do -8 with ORB fittings to get the best flow
I'm sure you will get some people in here saying they've made 1200 on stock rails or some **** like that though.
I'd do -10 from the pumps to a Y in the engine bay,
-8 from the Y to the front of the rails,
-8 out the back of the rails to the regulator
-8 return to the tank.
IMO, and that's all it is an opinion. That's the "right way" to run the lines on something you want to make big power on. Both rails get full pressure/volume from the pumps and will help eliminate bank to bank fueling problems.
I'm a big advocate of over building the fuel system so you only have to do it once.






