I'd say front sump only.
Have a look at the position of the mounts compared to the mid sump. They are smack bang in the middle of the sump, which would put the sump smack bang in the middle of the crossmember, unless you have huge mounts.
Front some however should fit in that nicely. I'd rather be doing some slight firewall mods rather than sump/swaybar mods.
And Zuffen, I think you have the mid mixed up with the rear.
The mid sump is directly in the middle of the motor.
Its the rear sump which is not really a rear. Its more of a midrear, but even more mid than that.