I cant remember how much difference is in the floor pan/fuel tanks between sedan & wagon, but in my sedan l fitted a Holley blue pump at the front of the tank.l wanted to mount it fairly low, but not right at the back of the car so it screams "look at me!". l had twin 2 1/2" pipes to get around as well as the 9" housing & sway bar.lts mounted out towards the far right of the tank(away from the bulge of the housing centre) & l mounted one of those perma-cool large fuel-filters in the same location,but opposite( on the left side)if that makes any sense. Both were mounted by brackets bolted through the boot floor & hanging down vertically to mount the pump/filter. Hope this is of some help. Daz.