I am running a R31 skyline tank in my ute but I am not going to bother with a surge tank. I am just putting a quality intank pump into the existing cradle and running a supply and return line. I figure, its a ute with bugger all weight over the back axle so I will always race with a full tank of juice so it will never suck air plus the skyline tank is baffeled around the cradle to minimise any cavitation. All the datto emissions will plug into the R31 skyline tank which will appease the engineering gods.